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Ajay Pattassery


Last seen: Today

MathWorks

134 total contributions since 2019

I am an Application Support Engineer at Mathworks.
I am interested in Communication, Signal Processing and Deep learning.

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

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Answered
How to position the default interactivity bar?
I am not sure of moving the figure toolbar, but you could remove it from the figure using the following command ax = gca; ax.T...

1 month ago | 0

Answered
Groundtruths in StopSigns Example Has 27 Images detected & The root Folder Contains 40
why MATLAB StopSign Example has 40 images in the root folder and in the ground truths there is a 27x2 table being detected? The...

1 month ago | 0

Answered
Conflict between native and toolbox function
You can add the path where the scroll.m file is located to the MATLAB search path permanently by using savepath function. Then M...

1 month ago | 0

| accepted

Answered
sound will not play Mac Matlab 2018b
The issue is most likey due to having multiple user-defined sound.m files. Replace sound(signal, fs) with the following code p...

1 month ago | 0

| accepted

Answered
Random sampling with imposed condition
I assume you want the samples to be generated from a uniform distribution in the range from 0 to 20. You could use the reductio...

1 month ago | 0

Answered
Does Matlab support Deployment YOLO V2 to Raspi Pi 3
Yes, Raspberry Pi 3 Model B and Raspberry Pi 3 Model B+ are supported by MATLAB. Refer here for all the supported Raspberry Pi ...

1 month ago | 0

Answered
non maximum suppression boxes display
I assume you would like to see all the bounding boxes from the output of the R-CNN Object detector. For this, you could give th...

1 month ago | 0

Answered
Extracting data from external file
The NorfolkMonMeanTemp.dat seems a matrix with 3 columns. The questions like extracting the monthly mean for a particular mont...

1 month ago | 0

Answered
Undefined function 'piecewise' for input arguments of type 'double'. or 'Conversion to logical from sym is not possible.' errors
The logical operator && is a short-circuit operator which means the second operand is only evaluated when the result is not full...

1 month ago | 0

Answered
What method does SLAM use for localization?
lidarSLAM is a graph-based SLAM implementation. The lidar scans map the environment and are correlated between each other to bui...

1 month ago | 1

Answered
Angle indication with lidarSlam
I understand that the Map is already known to the robot. lidarSlam object helps in building the Map by performing localization ...

1 month ago | 1

Answered
output coordinates with conv2
I assume you want to find the output size after 2D convolution with an argument as ‘valid’. In the case where S = conv2(S1, S...

1 month ago | 2

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Answered
How to make a 1D become 2D and create a contourf plot
You could use meshgrid which returns the 2-D grid coordinates contained in the vectors time and height. [timeX,heightY] = meshg...

2 months ago | 0

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Answered
Adjusting zticks and xticks position for bar plot
You can try rotating the labels of the overlapping axes. Refer xtickangle for more information.

2 months ago | 0

Answered
Plotting EEG 36 channel data using code
You can use pwelch for finding the power spectral density of the signal. For example, pwelch(x,250*30, [],[],250); where x ...

2 months ago | 0

Answered
Recognising/classify segmented objects in RGB image
Hello, The following sample code will extract the segment of image that you could use for classification. Here I assumed you w...

2 months ago | 0

| accepted

Answered
AppDesigner future question: Menu Bar and Context Menus
Hello, Menu Bar is currently available in app designer. Please refer the following link for the available components in the co...

2 months ago | 1

| accepted

Answered
is there any way to use a bmp file with PRM to find path planning route
The .bmp file can be first converted into a binaryOccupancyMap. This map can be used as an input to the mobileRobotPRM function ...

2 months ago | 1

Answered
Connection to Thomson Reuter Eikon to download information on prices and interest rates
The following example will be helpful.

3 months ago | 0

Answered
How do you change the local location of the MATLAB Drive folder?
Refer the instructions in the following MATLAB Answer. https://in.mathworks.com/matlabcentral/answers/378069-matlab-drive-canno...

3 months ago | 0

| accepted

Answered
Decimate signal that contains NANs
I understand you want to decimate signals that contain NaN. I assume you would like to decimate a signal by a factor r if it co...

3 months ago | 0

Answered
how to add a FeedForward layer after my LSTM layer
You could add desired layers after your LSTM network layer by specifying them as columns in the layers array. Consider an examp...

3 months ago | 0

Answered
Drop-down icon in matlab app designer
Hello, The position of drop-down menus does not affect its functionality. I understand you would like to add two drop-down men...

3 months ago | 1

| accepted

Answered
Using subs on contents of a cell
You can substitute I1 with I_val and I2 with I_val seperately. I = subs(cell2sym(I),I1,I_val); But once you do substitution w...

5 months ago | 0

| accepted

Answered
how can I silently uninstall MatLab R2017
Hi, The following link will be useful. https://in.mathworks.com/matlabcentral/answers/100721-how-do-i-use-the-silent-uninstall...

5 months ago | 0

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Answered
How can I genereate only one h file?
Hello, You can have a single header file modelname.h as codegen output by setting the File packaging format in Simulink Model C...

5 months ago | 0

Answered
Expressing a matrix with parameters and letters
Define the variables F1, F2, and F3 as symbolic variables. syms F1, F2, F3 B = inv(A); b = [0 F1 0 F2 0 F3 0 0 0 ]’; x = B*b...

5 months ago | 1

| accepted

Answered
Histogram with different sized bins and edges to illustrate wave periods
The following code will plot the above bar graph waveperiods = (9:21); observations = [1 5 14 22 28 5 6 2 1 0 1 0 0]; groups ...

5 months ago | 0

| accepted

Answered
Unable to play audio because no audio outputs were found
If you just want to play the music in MATLAB Online, you could use ‘sound’ instead. But it will have lesser capabilities compare...

5 months ago | 0

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