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

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Answered

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...

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...

7 months ago | 0

Answered

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...

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...

8 months ago | 0

Answered

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...

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...

8 months ago | 1

| 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...

9 months ago

Solved

Convert given decimal number to binary number.

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

9 months 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...

9 months ago

Answered

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,'...

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,'...

9 months ago | 1

| accepted

Answered

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...

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...

9 months ago | 0

Answered

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...

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...

9 months ago | 0

| accepted

Answered

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...

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...

9 months ago | 0

Answered

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

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

11 months ago | 0

| accepted

Answered

Save multiple .dat files using for loop

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

Save multiple .dat files using for loop

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

11 months ago | 0

Answered

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...

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...

11 months ago | 0

Answered

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...

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...

11 months ago | 0

| accepted

Answered

Finding min values of third column for rows with similar values

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

Finding min values of third column for rows with similar values

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

11 months ago | 0

Answered

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...

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...

11 months ago | 0

Answered

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...

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...

11 months ago | 0

| accepted

Answered

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...

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...

11 months ago | 0

Answered

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...

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...

11 months ago | 0

Answered

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 = ...

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 = ...

11 months ago | 0

Answered

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....

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....

11 months ago | 0

Answered

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...

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...

11 months ago | 0

Answered

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 = ...

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 = ...

11 months ago | 0

Answered

scatter plot with showing their means and error bars

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

scatter plot with showing their means and error bars

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

11 months ago | 0

Answered

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

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

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

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

11 months ago | 0

| accepted

Answered

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...

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...

11 months ago | 0

| accepted

Answered

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...

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...

11 months ago | 0

| accepted

Answered

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...

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...

11 months ago | 0

Answered

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')...

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')...

11 months ago | 1

Answered

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 ...

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 ...

11 months ago | 0