# Vimal Rathod

### MathWorks

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I am an Application Support Engineer at Mathworks. My main responsibilities are supporting customers by answering in MATLAB Answers and also supporting developement teams at Mathworks.

My areas of interest are Simulink, MATLAB, Image processing, Computer Vision and Deep Learning.

DISCLAIMER: Any advice or opinions here are my own, and in no way reflect that of Mathworks.

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Persistent variables from Simulink to Matlab

Hi, You could refer to the following link to know mroe about how to export the simulink data from the model to the worksapce. ...

nästan 3 år ago | 0

Change the color of a line in a multilines plot when mouse over the particular line

Hi, Below is a link to a similar question, once you identify the line on the plot you could highlight it by increasing the 'Lin...

nästan 3 år ago | 0

Add context menu when LEFT click on button (app design)

Hi, You could try setting up 'HitTest' property of the Image to 'off' that way your UI could register its clicks and hopefully ...

nästan 3 år ago | 0

Paraboloid and Cylinder surface

Hi, From the given equations in your question the solution to the value would be (0,0) as the equation of cylinder creates a su...

nästan 3 år ago | 0

How can I plot a boundary between real and imaginary solutions in a 3D graph?

Hi, If you just want to connect points you could use the surf function on the x,y,z values obtained at the end. If you want to ...

nästan 3 år ago | 0

How can I interpolate a graph with 3 nodes?

Hi, For splines to work effectively, you have to pass more than one point. Instead of the for loop which you were using, you co...

nästan 3 år ago | 0

| accepted

LSTM get percentage of each class

Hi, You could use "predict" function to predict indiviual prediction probabilities. You can multiply by 100 to get the percenta...

nästan 3 år ago | 1

| accepted

Plotting a shapefile.

Hi, You could try using FaceAlpha property of mapshow to reduce the transparency of the polygons. Have a look at this example s...

nästan 3 år ago | 0

| accepted

How to solve this error "Reference to non-existent field 'axes5".

Hi, you could get the handle of the GUI element specific to the tag using the following code. h = findobj('Tag','axes5') Refe...

nästan 3 år ago | 0

How to change the value in edit field and Simulink model constant at the same time in the app designer?

Hi, You could use the "ValueChangedFcn" callback to create a callback for the editfield in the app. Then in the callback code y...

nästan 3 år ago | 0

Simulink from first order equation (ode45)

Hi, Refer to the following link to know more about how to create simulink model for differential equations. Model Differential...

nästan 3 år ago | 0

| accepted

Integration on both sides of the equation

Hi, You could refer to the following links to create two different integral expressions and equate them to make an equation wit...

nästan 3 år ago | 1

| accepted

Solenoid - Integration of inductance L as a function of plunger position x

Hi Goutham, Few things I would like to point out are, you seem to be passing a lot of arguments to the ode45 function call whic...

nästan 3 år ago | 0

Bin data for 2 state model HMM

Hello, It isn't possible to run with your bin data as the HMM sequence must be 1 and 2 in case of two state model as this is ho...

nästan 3 år ago | 0

How do you perform correlation coefficient for every ten rows in a specific column of a matrix?

Hi, You could use the following snippet to find out correlation coefficient over every 10 rows of some specific column. r = ra...

nästan 3 år ago | 0

Equations of motion from simscap multi body

As of now there isn't any way to extract equations of motion from simscape multibody as it was designed to help users by abstrac...

nästan 3 år ago | 0

Profile Matlab System block in Simulink

Hello, Like you said, the Simulink profiler would not show MATLAB line-by-line profiling results - rather it will show the time...

nästan 3 år ago | 0

App Designer show mdl_twolink in UiAxes Component

Hi, I would recommend you to try using the plot without the twolink.plot function unless the twolink.plot function returns x,y ...

nästan 3 år ago | 0

Why can't i start the "androidFaceDetectionAndTracking"?

Hello, Few recommendation from myside based on the information you provided. 1) Verify the existance of the file which is to b...

nästan 3 år ago | 0

Cat and do recognition kaggle dataset and run out an error of imread

Hi, Most probably when such errors occurs the problem is usually in the file it is trying to parse. Try putting a breakpoint at...

nästan 3 år ago | 0

How to build a multiple output regression model?

Hi, Currently there might not be any function like 'fitrauto' for multi-response variable regression but you could create your ...

nästan 3 år ago | 0

I have completed the matlab onramp course, but its still showing 97% completed.What do I do?

Hi, Make sure you have green tick marks beside each item in the course content list, there might be a list item where you might...

nästan 3 år ago | 0

how to change the colorbar spacing

Hi, You could use the 'TickLabels' property of colorbar to put the labels which you need in the places where you would like to ...

nästan 3 år ago | 0

How to find area under graph between two points ?

Hi, If you would want to find area by specific points from array, you could use the indices of array to find the area. M = tra...

nästan 3 år ago | 0

setup data type in Matlab to export in SQL

Hi, You could refer to the following link for an example on specifing data type before insertion into table and there are other...

nästan 3 år ago | 2

| accepted

Selection of a signal area to detect fixed point

You could use the "getsamples" function programmatically which returns subset of the timeseries in a specified time region. This...

nästan 3 år ago | 0

| accepted

Plotting a circular region from a function

Below is a link to a similar question which might be of help to you. How can I plot the region for two inequalities? - MATLAB A...

nästan 3 år ago | 1

| accepted

How to add error bars onto 3bar?

Hope this might be of help to you with plotting errorbars on 3d Bar Plot. 3D Bar Plot with Error Bars - File Exchange - MATLAB ...

nästan 3 år ago | 0

Overwrite single row excel information based on Unique ID in column data

Hi, You could use the find and strcmp functions to find the index where the name or uniqueIndex matches. newName = "Diana"; d...

nästan 3 år ago | 0

How to generate unmodulated train of pulses of certain pulse width, and certain pulse repetition frequency, with certain sampling frequency?

Hello, Have a look at the documentation link of pluse train, it provides various examples of how to tweak each variable to get ...

nästan 3 år ago | 0