# Sudheer Bhimireddy

Postdoctoral research associate at Illinois State Water Survey. Using MATLAB for past 10 years.

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**Content Feed**

Plotting a 3D array over time - APP Designer

If you can export your values "to workspace" you can simply use plot3 function in your MATLAB code once the simulink run is co...

2 years ago | 0

Writing data in columns from "for loop" to ".txt" file

Your fprintf syntax is what writing everything in one column. Try the below line and see: for count=1:10 fprintf(result_fi...

2 years ago | 0

Shade areas between graphs

Look at area() function in MATLAB. May be that helps with your code. Below is an example: x = -3*pi : 0.1 :3*pi; y...

2 years ago | 2

| accepted

Solved

Find out sum and carry of Binary adder

Find out sum and carry of a binary adder if previous carry is given with two bits (x and y) for addition. Examples Previo...

2 years ago

Solved

Convert given decimal number to binary number.

Convert given decimal number to binary number. Example x=10, then answer must be 1010.

2 years ago

Solved

Find the longest sequence of 1's in a binary sequence.

Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

2 years ago

how to obtain the number of lines starting with a given string from an external text file and save the numeric value of variables of those lines

Another approach: data = readtable('test.txt'); % test.txt contains the given text drl_count = sum(strcmp(data.Var1,'...

2 years ago | 1

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Extracting specific rows with different content from a large table array

Convert the datenum to datetime, and then you can use the MATLAB function isbetween() to get all the indices that satisty your c...

2 years ago | 0

How do i load massive multi-variable files and manipulate the data?

Your approach is correct. Perhaps the below code might help. % Read the txt file data = readtable('Strawberry.txt','Forma...

2 years ago | 0

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Pie Chart in for loop

Are you clearing the figure at the start of each iteration in your loop? I am not seeing the problem you are facing. I got the b...

2 years ago | 0

Plotting a contour plot with excel data

doc readmatrix Import your data into a 2D array and then decide what columns you want to plot using contourf

3 years ago | 0

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Save multiple .dat files using for loop

Try this: fileName = sprintf('test%d.dat',k); writematrix(your_matrix,fileName);

3 years ago | 0

xlswrite writing extra collumns

"e.g. columns of data from searchresult2 for filename15 get added into, and written into filename16" That's because you dont ha...

3 years ago | 0

How can I join two parts of a char into just one?

Try this: fileID = 1; for i = 1:9 for j = 6:0.5:10 fileName{fileID,1} = strcat('SiON_D4_L',num2str(j),'_12Lyrs_T...

3 years ago | 0

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Finding min values of third column for rows with similar values

If the order is not important, look at sort function.

3 years ago | 0

Accessing Elements in a 3D matrix using Linear Indexing ?

Yes, it is possible. Read this. A = rand(10,10,10); B = A(1:2,1:2,1:2); %<- indexing the first two values in all dimensions s...

3 years ago | 0

I dont know where im going wrong with the code

The left-hand side should be the variable alone. Change that to c = sqrt(adj^2 + opp^2) c^2 cannot be the variable name as it...

3 years ago | 0

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Error using Video Writer

Your code looks strange. Do you have 'hold on' before the loop? Also if you have complete extents of your x,y variables, you c...

3 years ago | 0

Subplot VAR variables in one figure

I just tried your code with a dummy matrix, values and see no error regarding linestyle. It would help if you can attach your ma...

3 years ago | 0

I want to plot a graph like this in Matlab. It would be a great help if someone can help me with the same by providing the code.

Neglecting i=0, you will have 7 lines governed by that equation. Have you tried it by using a simple loop for i = 1:7 ? x = ...

3 years ago | 0

Convert .mat file into .xls file

https://www.mathworks.com/help/matlab/import_export/exporting-to-excel-spreadsheets.html Follow the example given on that page....

3 years ago | 0

Index exceeds the number of array elements (4)

Try debugging by placing breakpoints inside the functions. Here is what I see. Your q_level array is size 1x4 while the q_inde...

3 years ago | 0

How to save the axes include x-axis and y-axis

Try this, after your axis() line: ax=gca; ax.XTick = 0:0.2:1; ax.XTickLabel = 0:0.2:1; ax.YTick = 0:0.2:1; ax.YTickLabel = ...

3 years ago | 0

scatter plot with showing their means and error bars

doc errorbar Look at the matlab example: "plot error bars with no line".

3 years ago | 0

How to make a a certain range with different color in colorbar

Try this function: https://www.mathworks.com/matlabcentral/fileexchange/4058-bluewhitered

3 years ago | 0

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Plot 9 parameters for 29 country for 20 years in one curve

You can try something like this: % Read data from one sheet data = readtable('base.xlsx','Sheet','Feuil6'); % Read a param...

3 years ago | 0

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Split array into training and testing based on label ?

Try this: A = rand(500,4); labels = randi([1,4],500,1); A(:,4) = labels; % Filter data based on labels A_1 = A(A(:,4...

3 years ago | 0

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constructing a video from a sequence images

It depends on the order in which you are reading the image files. If you want to check this, look at your imageNames variable an...

3 years ago | 0

Trying to save the red positions of an image

Does your image has that Red value? Double-check it. To test your code, follow this example. A = imread('ngc6543a.jpg')...

3 years ago | 1

How to repeat different vectors to form another vector?

For OPs example, it would be: >> A = [repmat([1,2,3],1,3) repmat([4,5,6],1,3)] %... repmat([k-2,k,k],1,3)]; >> A = 1 ...

3 years ago | 0