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How can i plot a colormap (2d)
You can use pcolor

11年以上前 | 0

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add a column between tow columns
Given the array A and the column vector x, let n be the column after which you want to add x into A: ncol = size(A,2); c...

11年以上前 | 2

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Problem getting polygons for NY state?
The second part of the code didn't work for me, so I replaced it with this and I get a nice contour: k = struct2cell(states...

11年以上前 | 1

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Changing save name for text file
Use: S=strcat(cd,'\Results\',[answer,'.txt']);

11年以上前 | 0

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how to store value from loop
Define a cell array before the loop: x_error = cell(50,50); % Adjust num elements according to your loops and then do: ...

11年以上前 | 0

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Not all Subplots are plotting
you have for j = 1:a with a = 0.1, i.e. it never enters the loop

11年以上前 | 0

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Integration of a curve
You can use trapz

11年以上前 | 0

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Contouring a mesh and assigning magnitude arrows in Matlab
use quiver(x(1:dx:end),y(1:dy:end),u(1:dy:end,1:dx:end),v(1:dy:end,1:dx:end)) where dx and dy are how many elements to ...

11年以上前 | 3

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determine loop which include cellarrays
z=[1 2 3;4 5 6;7 8 9]; w = cell(3,1); n = cell(3,1); for i=1:3 w{i}=z(:,i); n{i}=w{i}(1,:); end

11年以上前 | 0

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How data or numbers from excel tranfer to matlab workspace and communicate with the matlab GUI?
Don't do it that way. Read the excel file in the opening function of the GUI or where appropriate (e.g., when you press on a pus...

11年以上前 | 0

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add a number to the legend
legend(['Sandwich panel(',num2str(put_number_here),')']) or you could use sprintf.

12年弱前 | 2

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Error: In an assignment A(I) = B, the number of elements in B and I must be the same
If you do not need to store Num0 and have it after the for loop ends, you could just do Num0 = find.... especially beca...

12年弱前 | 0

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for look and store in a 2x2 matrix
for i = 122:305 assignin('base',['A',num2str(i)],DamithCount(S1(i,:),S1(i+1,:))); end Look up assignin to...

12年弱前 | 0

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how to display string's edit box and string's popup when i go back from GUI2 to GUI1
You can write a function that sets the values in GUI1 when it is called from GUI2, i.e. something that does: set(handles.my...

12年弱前 | 0

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help error: Reference to a cleared variable data.
remove clear all otherwise the input parameters get cleared before doing any calculations.

12年弱前 | 7

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Help with exponential returning zeroes
B = exp(A)

12年弱前 | 0

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Change the axis tick
set(gca,'xtick',1:1:10) replace 10 with your larger value

12年弱前 | 1

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How can I use matlab to write data from a textfile and into an Excel sheet?
Once you have the data in matlab, use xlswrite. If you have 3 cols and n rows, where n can change: xlswrite('filename.xlsx'...

12年弱前 | 0

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Identidying next "n" elements of an array
To find just the first element that meets your condition, you can do: Inds = find(h<.90 & h>0.89,1); then: h(Inds+1...

12年弱前 | 0

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ODE45 how do I interpret this code...
When you call an ode solver, the values of y passed to your function Y change in time and depend on numerical method, in this ca...

12年弱前 | 0

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trying to create a legend that explains scatter plot marker type
You can try changing the order in which you plot data as: hold on h11 = scatter(MOCmaxCumEmFAST, minMOCFAST,size...

12年弱前 | 0

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loading items from listbox1 to listbox2
Add this: temp = get(handles.listbox2,'String'); temp{end+1} = filename; set(handles.listbox2,'String',temp)

12年弱前 | 0

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link between edit text 1 and 2 when puch button has click
in the edit1 callback save the variable inputted by the user in a variable: handles.myvar = get(handles.edit1,'string'); ...

12年弱前 | 0

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how to stop from running a program whenever any of the element become zero or gets negative?
If you want to exit the loop, you can do: if(ismember(0,B)) break end If there is code after the loop, that part...

12年弱前 | 1

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How do I extract a row of data from a cell array?
If you know which row you want to extract, you can do: b = a(row,:);

12年弱前 | 0

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format the y tick labels
If you want to change the format of the y-axis: y = get(gca,'ytick'); yy = cell(numel(y),1); for i = 1:numel(y) ...

12年弱前 | 0

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remove values of a matrix from another
If A and B are 1D arrays: for i = 1:numel(B) A(A==B(i)) = []; end

12年弱前 | 0

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Search excel file for specific data and then copy adjacent columns in that range
I would read in the xls file with "xlsread" (the whole set of data). Then search the first column of the imported data with the ...

12年弱前 | 0

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I need help with GUI
Define a variable that counts how many time the pushbutton has been pressed and set it to zero in the OpeningFcn as: handle...

12年弱前 | 1

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Read excel data but keep formatting? Is this possible?
Use this form of xlsread, you'll find your variable into txt or raw: [num,txt,raw] = xlsread(___) From the help: [num,...

12年弱前 | 0