Matlab cumtrapz. Cumtrapz just gives you the intermediate results too.

Matlab cumtrapz Choose a web site to get translated content where available and see local events and offers. Sign in to comment. For more information, please visit: http://engineering The matlab documentation for integral shows an xmin and xmax which to me seem like a restricted listed of points for the integral. Improve this answer. Programming. Matlab中，可以使用cumtrapz函数表示一组数据的累积梯形数值积分。累积梯形数值积分，通过梯形法按单位间距计算近似累积积分。关于梯形数值积分trapz函数的用法，可以参考文章：《Matlab数据处理之梯形数值积分函数trapz》。 本文主要介绍cumtrapz函数的常见用法、语法说明，以及一些常用实例。 When you subtract off the mean of the series, you are performing a numerical integration, of sorts. 0, axis=-1, initial=None) [source] ¶ Cumulatively integrate y(x) using the composite trapezoidal rule. clear %g = 1; %Coupling strength k = 20; %Decay linewidth for cavity no = 0; %input photon number for cavity nm = 40; %input phonon number for mechanical oscillator Del = -10^2; Vai al contenuto Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! Si è verificato un errore. cumtrapz computes the approximate cumulative integral of numeric data using the trapezoidal method with user-specified spacing. Matrix Operations, so see that documentation for guidance. 2. Input Y can be complex. For matrices, cumtrapz(Y) is a row vector with the cumulative integral over each column. I; % current values. Hi I would like to use the cumulative trapezoidal method to obtain the integral of function f with a domain [0. cumtrapz(acceleration,time, initial=0) Share. cumptrapz has to stay in the loop in order for me to obtain an array of areas for different g values. Is this possible to do using cumtrapz()? I'm not sure how to specify the limits. To investigate the appropriate function I have defined a square wave in MATLAB: with amplitude varying between -1 and +1 (length of x is 101). With cumsum(), it will also work, even with arbitrary spacing in the input data. Basing on this You need to set initial starting point, because cumtrapz is returning list with one value less then initial: velocity = it. Categories. The versatility of matlab cumtrapz extends to multi-dimensional data, allowing users to integrate over matrices. The coordinate to integrate along. I understand that some values can be lost when doing this from finding the integral twice but is it possible to calculate thi This MATLAB function computes the approximate cumulative integral of Y via the trapezoidal method with unit spacing. Related posts. Does it follow that the more acceleration data I have (for whatever fixed timescale), the better results I'll get from cumptrapz? Learn more about cumtrapz, trapz, numerical integration, integration, nonlinear, pendulum, ode, error, initial conditions MATLAB Hi, i'm trying to integrate acceleration of a simple pendulum twice to get the displacement, and i've plotted it against time. Mastering Matlab Online: Your Quick-Start Guide. When you subtract off the mean of the series, you are performing a numerical integration, of sorts. Skip to content. 0014428, in addition the length of them will also not be the same hence can't perform trapz. Q = cumtrapz (t, I) 3 Comments. If I try to do: cumtrapz integrates numeric data rather than functional expressions, so in general the underlying function does not need to be known to use cumtrapz on a matrix of data. I dont have a bad name to add, but I can be positive in saying that my favorite function name is ezplot Reply reply UndeadCaesar • gg ezplot get gud Cumtrapz in a table does not work with datetime . 5]. For example, if you have a matrix where each row or column represents different variables, `cumtrapz` can integrate across the specified dimension. This data represents the velocity of an automobile (in m/s) taken at 1 s intervals over 24 s. If the summed array starts with 0 as with your input array (dydx), the first element at the summed array is also zero. 1165 0. Use trapz and cumtrapz to perform numerical integrations on discrete data sets. cumtrapz() Return : Return the cumulative integrated value of y(x). However, it is showing errors in cumtrapz. Mastering Matlab Cumtrapz: A Quick Guide to Integration. Coulomb counting is basically the integral of the current w. cumtrapz also returns the intermediate integration values, preserving the size of the dimension it operates on. About Us. Z = cumtrapz(X,Y) computes the cumulative integral of Y with respect to X using trapezoidal integration. Learn more about numerical integration, integration I have a matrix of data points "Y" and want to numerically integrate each ith row of matrix Y from 0 to the ith element of vector "lim" which contains the upper limits of the integral. Enable dark mode. Matlab Compute Centroid Audio: A Quick Guide. Use trapz or cumtrapz when a functional expression is not available for integration. I know that the last value of phi 2 should be pi=3. So if you have current values and corresponding time values, then you can use cumtrapz() t; % time. How accurate is the cumtrapz (Cumulative trapezoidal numerical integration) integrator in MATLAB?. The cumtrapz function uses unit spacing so I think the columns of Y represent the x-axis from x=0 to x=4. If I plot a = cumsum(x) and b = cumtrapz(t,x) I find similar shaped (saw-tooth) plots but . I am trying to calculate the integral of a plot from my accelerometer data over time to find the graph of velocity over time, and after using cumtrapz it seems data is ge Use trapz and cumtrapz to perform numerical integrations on discrete data sets. Numerical Integration: (w/ linear interpolation) % MATLAB R2017a T = [15 20 30 40 50 70 90 110 130 140 160 180 200 220 240 Other problems may also exist that relate to Array vs. As it only drives forward, there are no negative values. I know cumtrapz thinks the deltaX=1 in this method. Thus each element of the result is the integral from zero to that point in the vector. q = integral(fun,xmin,xmax) or cumtrapz() for. 0. Sign in to answer this question. Learn more about cumtrapz, accelerometer, integral, plot MATLAB Hi I'm very new to MATLAB. Definite integral using cumtrapz(). Lets say I have this code: quad(@(x)myfun,-2,2) Were myfun is a function in a different . John D'Errico on 26 Aug I have been trying to use cumtrapz function to integrate velocity at a given time interval to get the position. For vectors, cumtrapz(Y) is Open in MATLAB Online. integrate cumtrapz. Search File Exchange File Exchange. Also, be sure you read the matlab and SciPy documentation of each function carefully. I can properly filter the data as best as I can and use cumtrapz but the problem is that the am This is trivial integration: each entry of the vector gcn . View the Velocity Data. 1. Use cumtrapz to approximate the double integral cumtrapz integrates numeric data rather than functional expressions, so in general the underlying function does not need to be known to use cumtrapz on a matrix of data. Other problems may also exist that relate to Array vs. It uses a cumulative trapezoidal rule, ergo cumtrapz. To compute the integral with other than unit spacing, multiply Z by the spacing increment. Support. 2024-12-11T06:00:00 Mastering Matlab Varargin for Flexible . cumtrapz is one form of numerical integration, that applies a cumulative trapezoidal rule. Go to matlab r/matlab. This would only happen if there was no drift introduced by cumtrapz. cumtrapz. (This is similar to cumsum(Y), except that trapezoidal approximation is used. 2. Find the treasures in MATLAB Central and discover cumtrapz computes the integral of a function that we assume is represented by the values in that vector (or array). See syntax, description, examples, and input arguments trapz computes the approximate integral of numeric data via the trapezoidal method with unit spacing or specified coordinates. trapz reduces the size of the dimension it operates on to 1, and returns only the final integration value. * fen just being multiplied by the distance between the bounds. Learn more about cumtrapz, area, cell arrays . There is also a matrix solution to second order boundary value problems, called Finite differance method, but that one is slighly more advanced. julia; numerical-integration; Share. Values to integrate. If I try to do: The accuracy of cumtrapz (numerical Learn more about cumtrapz, numerical integration . max(a) = 33. 2024-10-14T05:00:00 matlab ConnectLayers Convolution3D: A Quick Guide. I am trying to find the area under the curve by using cumsum and cumtrapz but I am getting the wrong answer. 1879 Problem. If None (default), use spacing dx between consecutive elements in y Learn more about cumtrapz, acceleration, velocity, displacement I have accelerometer data in the form of a sine wave that I want to double integrate to displacement. Unfortunately, cumtrapz() uses the trapezoidal method for numerical integration, which is cumtrapz integrates numeric data rather than functional expressions, so in general the underlying function does not need to be known to use cumtrapz on a matrix of data. I have 2 csv files with one column increasing and the other decreasing in each file. 2, 1] with regards to x. cumtrapz(), cumsum() and similar do what they state they do: summing the input array cumulatively. I think there is an issue with the syntax of the input function and I am unable to figure it out. Say I have a set of discrete acceleration data and want to integrate it to get a set of velocity data. Find the treasures in Use trapz or cumtrapz when a functional expression is not available for integration. Therefore the reply of CUMTRAPZ starts with 0 ever and ends with the value, which would be replied by TRAPZ. Anybody know what's the issue here? I also don't want to use detrend to remove the polynomial part, When I write the following script in Matlab y=[1 4] and then when I use cumtrapz(y) I get [0 2. edu/pr 文章浏览阅读3w次，点赞4次，收藏22次。在Matlab中，trapz和cumtrapz均是用梯形法来计算数值积分。t=0:1:5;y=t;trapz(y);trapz(t,y)；cumtrapz(y)；cumtrapz(t,y)；前面两个计算结果为后面两个计算结果为即trapz只是算出一个最后的结果即把y从0到5积分的值；而cumtrapz会把中间每一步的结果都算出来，即计算出y从0到0 This is the whole integral of the function - total area underneath the curve. Find the treasures in MATLAB Central and In MATLAB, I can do this easily using cumtrapz(): >> result = cumtrapz( x, f ) result = 0 0. trapz reduces the size of the dimension it operates on to 1, and The number 1 most important rule of data analysis is that you must understand the source of the data. But i dont know what else i could do, because i just have datapoints of acceleration and nothing else. armstrong. Nguyen on 16 Nov 2020. Learn more about table, datetime, cumtrapz, for loop MATLAB Hi, I have a table with loading power values (column 4) of a battery and unloading power values (column 5). This rule is defined to approximate a numerical integration for a definite time frame by dividing the area under the Learn more about cumtrapz, acceleration I have data for a person swinging their leg back and forth, I have this data in the form of acceleration. Official MATLAB subreddit Members Online • bug_eyed_earl cumtrapz is pretty good. , to integrate a nonanalytic function (represented by an array)) 0 Comments. Create scripts with code, output, and formatted text in a single executable document. Other, more subtle defaults come into play and may not be immediately caught within functions except by manual checks. I read a paper where they did this too, but they didnt explain how they did it. However, it keeps giving me zero position at the beginning and end of the iteration, which is not what I expect. I dont know if cumtrapz is the soultion to my problem after seeing these results. 0137 0. i. Never Miss A Post! Sign up for free to . In fact, that last value from cumtrapz should be exactly what trapz would yield on the same series. Learn more about cumtrapz, integral, integration, numerical integration, drift Hello, I'm trying to get a displacement from a velocity. However, the velocity and displacement are showing exponential decrease. Consider that there's also another period preceding theta = 0 deg, so x_h is not starting at the undisturbed value at theta=0 deg, although it should. Learn more about cumtrapz, trapz, numerical integration, integration, nonlinear, pendulum, ode, error, initial conditions MATLAB. Maybe my explanation was too detailed that people didn't want to get into the details. ^2)/2); % THE PDF for the standard normal t=cumtrapz(x,p); % the CDF for the standard normal distribution plot(x,t); %shows the graph of the CDF Discover the essentials of a matlab cell array. Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! Discover Live Editor. integrate. Integration offset with cumtrapz (python/scipy) Hot Network Questions Obtaining the absolute minimal, original TeX engine Can a mathematical theory ever be Select a Web Site. For a constant velocity, the formula is: x_h = x_c + V*t Where x_c is an initial value, V is the velocity magnitude and t is a time vect Hi, I have created integral values in a table with the cumtrapz function. Show -2 older comments Hide -2 older comments. Join Now. Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! cumtrapz integrates numeric data rather than functional expressions, so in general the underlying function does not need to be known to use cumtrapz on a matrix of data. You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window. Learn more about numerical integration, matlab, signal processing MATLAB I tried trapz/cumtrapz but seem to be getting wrong and/or inaccurate results. )To compute the integral with other cumtrapz. Hi, i'm trying to integrate acceleration of a simple pendulum twice to get the displacement, and i've plotted it against time. Follow Different results with matlab cumtrapz and scipy. I don't have your data available, but consider this dummy data (I used trigonometric functions to make it easier to calculate the derivatives): MATLAB has a function called cumtrapz that handles this scenario. e. Learn more about cumtrapz, acceleration MATLAB I am running acceleration data into cumtrapz twice to convert to heave. but when I am using cumtrapz function as in the code down, the values of phi 2 is not ok. Now I am using the function Cumtrapz to integrate the signal of the forceplate to get the velocity of the center of mas MATLAB has incorporated the function trapz to process numerical integration using trapezoidal rule-following unit spacing. Use cumtrapz to approximate the double integral cumtrapz is giving different values for similar Learn more about matlab Different results with matlab cumtrapz and scipy. As with numerical differentiation, these functions handle the calculations that we had to manually type in in Excel. Does it follow that the more acceleration data I have (for whatever fixed timescale), the better results I'll get from cumptrapz? Numerical Integration in MATLAB. 14 almost. Show -2 older comments Hide -2 This example introduces the trapz and cumtrapz functions. Is there any way to obtain the length of curve easily? Thanks a lot, If you consider a vertical line as example, your solution with cumtrapz() will result 0 length, which is obviously wrong. . cumtrapz() method, we can get the cumulative integrated value of y(x) using composite trapezoidal rule by using scipy. Syntax. e, On the same graph, Use trapz and cumtrapz to perform numerical integrations on discrete data sets. Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! scipy. CUMSIMPSUM is a cumulative analog to SIMPSUM and may be used as an alternative to CUMTRAPZ. You need to know what type of sensors and acquisition system were used and the test procedures that were followed in order to be able to understand how accurate the data is, and what errors are inherent. In cases where the functional expression is known, you can Numerical integration using cumtrapz. it does this fine but when using cumtrapz it outputs a negative integral Use trapz and cumtrapz to perform numerical integrations on discrete data sets. And the method which you use, cumtrapz, is actually a O(h^2) method. t. Now, I'd like to reverse it, in order to find the power values of the battery, and plot those on a graph. how to add upper and lower limits in cumtrpz function? Skip to content. Trung Q. Based on your location, we recommend that you select: . Plot the velocity data points and connect each point with a straight line. Matlab November 23, 2020. Learn more about signal processing, digital signal processing, integration, curve fitting MATLAB Dear comunity, For a project I am analysing gait paterns with a force plate. 320. Master its creation and manipulation with our concise guide, perfect for quick learning. My question is that how matlab knows the vector 1,4 is created by f(x)=x^2? one could say it is created by f(x)=3x-2 by just identifying y vector values or many other type of functions. 1434 0. % Defined Acceleration values as Accel, Time is the steps of time velocity=cumtrapz(Time, Acceleration) While TRAPZ replies the scalar value of the integral, CUMTRAPZ accumlates it for each X-value and has the same size as Y. * fen values do not somehow interact with each other to calculate the "integral" in what you had. Note that cumtrapz(X,Y,DIM), where X is the name of the array to be integrated with respect to, Y is the array to be integrated, and DIM is the dimension of the cumtrapz. Cumulative trapezoidal numerical integration. File Exchange. Matlab Scripts and be the first to get notified about updates. Something like I have this task to create a script that acts similarly to normcdf on matlab. time. Since cumtrapz is cummulative it doesn't represent the value at a particular instance. Cumtrapz just gives you the intermediate results too. ) Use trapz and cumtrapz to perform numerical integrations on discrete data sets. I'm having problems understanding how to use trapz. clear %g = 1; %Coupling strength k = 20; %Decay linewidth for cavity no = 0; %input photon number for cavity nm = 40; %input phonon number for mechanical oscillator Del = -10^2; Passer au contenu Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! Une erreur s'est produite. Any help is mu A simple approach using interp1 and integral using plain vanilla settings. Accepted Answer . I would like to integrate the first row of Y from x=0 to x=3, the 2nd row from x=0 to x=2 and the 3rd row from x=0 to x=1. 9 for the right part of the graph, but I'm afraid it would wrong the integration, and that would be bad (because I need to integrate again the spectrum to find the area under the peak of the spectrum). x array_like, optional. The integral family only accepts function handles as inputs, so those functions cannot be used with discrete data sets. Z = cumtrapz(Y) computes an approximation of the cumulative integral of Y via the trapezoidal method with unit spacing. Use integral, integral2, or integral3 instead if a functional expression for the data is available. Python numpy. 246 height level corresponds NaN value of data, but after doing the above mentioned ops the 1st row contains 0. The only way I though is to do minus 4. To fix it in your code, you should add the offset to the cumulated sum: dydx_int = dydx_int + y[0] But for the general question about initial conditions Hi, I have created integral values in a table with the cumtrapz function. For vectors, cumtrapz(Y) is cumtrapz integrates numeric data rather than functional expressions, so in general the underlying function does not need to be known to use cumtrapz on a matrix of data. In MATLAB, the cumtrapz and trapz functions may be used for numerical integration using the trapezoidal method. Please help. How Matlab knows the function that a vector is produced by to calculate cumtrapz? 1. I am trying to integrate acceleration to get the displacement as you can see in the figure below. I'm not sure which is the appropriate integral final value I'm using the cumtrapz and trapz functions, and integrating from acceleration to get a displacement value. For multidimensional arrays, cumtrapz(Y) works across the first nonsingleton dimension. Example #1 : In this example we can see that by using scipy. Type "help cumtrapz" in the command window to find out more. Parameters y array_like. 在MATLAB中，cumtrapz函数是一个用于计算累积数值积分的函数。它的用法与trapz函数相似，但返回的结果不同。cumtrapz函数通过对输入数据进行数值积分，得到每个积分点的累积值。 Is there a function in Matlab that is similar to "cumtrapz" but uses a more accurate method of array integration (such as Simpson's rule)? (i. I have tried using cumtrapz to turn this data into displacement. Help Center; CUMSIMPSUM is a cumulative analog to SIMPSUM and may be used as an alternative to CUMTRAPZ. The data is collected over even time intervals for 120 data points. For vectors, cumtrapz(Y) is This MATLAB function computes the approximate cumulative integral of Y via the trapezoidal method with unit spacing. cumtrapz (y, x=None, dx=1. Learn more about numerical integration, trapazoidal rule, integration . You can examine the 'RelTol' and 'AbsTol' options in the documentation for integral. It showcases the runtime performance effects of using MATLAB to C code generation and parallel processing runs (using the cumtrapz is giving different values for similar Learn more about matlab Learn more about cumtrapz, acceleration MATLAB I am running acceleration data into cumtrapz twice to convert to heave. scipy. (If this question is about cumtrapz, you should simplify your tests to just a single call to cumtrapz with the same input arrays in matlab and Python. This MATLAB function computes the approximate cumulative integral of Y via the trapezoidal method with unit spacing. Cite As Michael Meyer (2025). This example shows two ways to accelerate the simulation of communications algorithms in MATLAB®. Use cumtrapz to approximate the double integral Download and share free MATLAB code, including functions, models, apps, support packages and toolboxes. If you want to show how integral grows with t, you need to use cumtrapz function which does cumulative integration: area = cumtrapz(t,phi); plot(t, area) % This is essentially equivalent to doing `trapz` in a loop with less hassle (for area(i)=trapz(t(1:i),phi(1:i Use trapz and cumtrapz to perform numerical integrations on discrete data sets. For more information, please visit: http://engineering. max(b) = 3. In cases where the functional expression is known, you can Advanced Applications Multi-Dimensional Data. Purpose. cumtrapz integrates numeric data rather than functional expressions, so in general the underlying function does not need to be known to use cumtrapz on a matrix of data. Learn more about cumtrapz, trapz, integration I'm using the cumtrapz and trapz functions, and integrating from acceleration to get a displacement value. Is there a function in Matlab that is similar to "cumtrapz" but uses a more accurate method of array integration (such as Simpson's rule)? (i. The SciPy functions are typically not exact duplicates of the corresponding matlab function. This is not establishing a list of points "along the way" and asking to do numeric integration given those specific points: that kind of calculation is what you use trapz() or cumtrapz() for. In cases where the functional expression is known, you can Learn more about trapz, cumtrapz, quad . Shop. Use cumtrapz to approximate the double integral This example shows how to integrate a set of discrete velocity data numerically to approximate the distance traveled. While TRAPZ replies the scalar value of the integral, CUMTRAPZ accumlates it for each X-value and has the same size as Y. Your various gcn . I think this step is due to an integration constant problem, but I couldn't find anywhere a method to correct it. Focus on With the help of scipy. Ran in: Hi, I have a curve which includes X (meter) and Y (meter) data. * fen values do not somehow interact with each other to what is the equivalent of Matlab's typecast function in R / Python / Julia Hot Network Questions Should a language have both null and undefined values? Consider using the cumtrapz function to find the displacement. I have a problem where I have to integrate a vector to get another vector. The 0-based indexing of Python / Numpy versus the 1-based indexing of Matlab is perhaps the most obvious difference when working between the languages. The issue is that, as you can see, cumtrapz drifts more and more away from the undisturbed value as time goes by. Integral of two lists doesn't give expected results. trapz reduces the size of the dimension it operates on to 1, and Python cumtrapz vs. The slope is positive during periods of acceleration, zero during periods of constant velocity A review of impulse & momentum, combined with how to use numerical integration techniques to find the area under a force-time graph in matlab. Read the Syntax and Description sections of the documentation for cumtrapz. cumtrapz¶ scipy. The cumtrapz values represent the capacity of a battery. Is there something similar that I can try within Julia to accomplish the same thing? The expected result is another 1-D array with the integral calculated for each element. In cases where the functional expression is known, you can instead use integral, integral2, or integral3. Subscribe. You may need to use element-wise operations elsewhere in your code. In this case I am simply trying to find the area under the curve using cumtrapz for Sbb against w. x=linspace(-5,5,1000); %values for x p= 1/sqrt(2*pi) * exp((-x. Use cumtrapz to approximate the double integral 这两个函数都是MATLAB中的内置函数，是基于梯形法则的数值积分公式 例如我们有函数y=x^3-2x-3，为了计算在[0,1]上的积分，可以这么做： 其中x和y分别是自变量和对应的值，trapz其实就是trapezoidal（梯形的简写），cumtrapz函数和trapz函数使用 Learn more about cumtrapz, trapz, numerical integration, integration, nonlinear, pendulum, ode, error, initial conditions MATLAB Hi, i'm trying to integrate acceleration of a simple pendulum twice to get the displacement, and i've plotted it against time. (this problem related to noncircular gear design). 1703 0. Learn more about trapz, cumtrapz, quad . i have created a code to calculate the midpoint and plot the csv files with the mid point (1 csv file is a minimum and the other is a maximum). Consider the following velocity data and corresponding time data. r/matlab. Matlab Scripts. Learn more about cumtrapz, integration, velocity, distance, matlab MATLAB Hi, I have a quite long vector with the longitudinal velocity data of a car. An example using the trapezoidal rule for numerical integration in MATLAB. Z = cumtrapz(Y) Z = cumtrapz(X,Y) Z = cumtrapz( dim) Description. Would only use more sophisticated numerical techniques if required for application. and . I understand that some values can be lost when doing this from finding the integral twice but is it possible to calculate thi Learn more about cumtrapz, trapz, numerical integration, integration, nonlinear, pendulum, ode, error, initial conditions MATLAB Hi, i'm trying to integrate acceleration of a simple pendulum twice to get the displacement, and i've plotted it against time. Accelerating a point in two dimensions. diff not giving negative Learn more about cumtrapz, integration, filter MATLAB I am working on a school project in which we analyze a second order system to create a magnitude function of a motor driven spring-mass-dampener system. m-file. Use cumtrapz to approximate the double integral Say I have a set of discrete acceleration data and want to integrate it to get a set of velocity data. 0169 0. cumtrapz() method. cumtrapz() I believe the problem is to do with initial conditions when integrating. This is a little more theory than what is custom in stackoverflow, but hopefully it will be helpful. Use cumtrapz to approximate the double integral For vectors, cumtrapz(Y) is the cumulative integral of Y. I've used cumtrapz to integrate some data, and put that data in the V{} cell. Means 0. x The cumtrapz command is a MATLAB command, which can be used to perform exactly the same analysis above in a computationally more efficient manner. In order to find what happened at time instance "3" you would need to subtract the cummulative total of instance 3 from instance 4. Syntax : scipy. I'm starting out with IMU data from subjects performing a defined task, including walking about 20 metres in one direc Open in MATLAB Online. See syntax, examples, and input arguments for different dimensions and spacings. as you can see in the example, it will definitely remove the nans, but will disrupts the order of remaining. r. Show 1 older comment Hide 1 older comment. Tutorials by MATLAB Marina. I have used you cumtrapz twice to get the displacement. 246 and 0. jpryki dws eoovtw wgua ckfi tfo retnjw akmps ibhi ptujq