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Yao Li


Shanghai Jiaotong University

Attivo dal 2013

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Assigning a vector to multiple rows of a matrix
b=ones(5,4); a=[1;2;3;4]; If you wanna assign a to the 3rd row of b, b=[b(1:2,:);a';b(4:5,:)]

quasi 5 anni fa | 0

Domanda


Hot key for showing section list
I just installed Matlab r2013a. It looks good, but I can't get used to the hotkey Ctrl+G. Previously, if you press Ctrl+G, a win...

oltre 9 anni fa | 1 risposta | 0

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how to write code for integerator block in simulink without using the simulink block ?
What about the state-space block?

oltre 10 anni fa | 0

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Problem with making a matrix of size [2 2 4 2] , need help
Data is a 16 x 2 matrix, so Data(i,j,k,m) is wrong.

oltre 10 anni fa | 0

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Add another y axis on the plot
Why not try plotyy(x,y,x,y)? Actually, you don't need two different series. They can be identical.

oltre 10 anni fa | 0

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Bode diagram at different amplitudes?
Option 1: export the input and output data to workspace and plot the bode diagram Option 2: Set the input/output port in simuli...

oltre 10 anni fa | 0

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add another y axis
I only know plotyy. But not sure whether it is what you are looking for.

oltre 10 anni fa | 0

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How to write to an excel sheet in specified columns only.
1. xlswrite('testdata',x-axisCordinates') ,"'" to convert to a nx1 array 2. You can specify the range ('C1:C5') xlswrite(fi...

oltre 10 anni fa | 0

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How do I cretae step response graph?
First, build the model in simulink. Then plot the output signal (i.e. current) vs. time "plot" can be used for time domain wh...

oltre 10 anni fa | 0

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Why do I get this error subscript indices must either be real positive integers or logicals?
plot(t,e);

oltre 10 anni fa | 0

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How can I design these nested for loops so they run much faster?
You need to design a new algorithm. Why not pre-sort the 2nd column of A and B before the comparison? Or calculate the min and m...

oltre 10 anni fa | 0

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matrix search and the save on a new matrix
find(a(:,2)) can be used to find the index of the non-zero rows.

oltre 10 anni fa | 0

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how to keep the strings displayed in the edit box and the selections in the pop-up menu in the GUI1 when you return back from GUI2.
# Save the string to workspace or setappdata # You can create a handle in the opening function of GUI1 to dectect whether GUI1 ...

oltre 10 anni fa | 0

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Plotting a time series with shaded regions
time='6/01/1998'; fwd_slash_loc=strfind(time,'/'); year=time(fwd_slash_loc(2)+1:end);

oltre 10 anni fa | 0

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Fortran to Matlab GOTO
There are many options: # Create a function for each destination of "goto". ie. Create a fuction for 111 # Copy and paste ...

oltre 10 anni fa | 0

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Can I automatically regconize function call and execute it in editbox of a GUI.
# Find the location of ";" by using the command strfind # Seperate the functions (ie. you need to run add1(5,3) first, then add...

oltre 10 anni fa | 0

Domanda


How to detect a left double-click on a cell of a uitable?
If I add a command get(handles.figure1,'selectiontype') under function figure1_WindowButtonDownFcn, only right single/do...

oltre 10 anni fa | 0 risposte | 0

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How to copy text content from a .txt file to a .ats file?
Just wanna let you know. I resolved this issue by using fid=fopen(filename,'wt') Instead of fid=fopen(filename,'w'...

oltre 10 anni fa | 0

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Domanda


How can I create shortcuts by commands?
I'm wondering whether it is possible to create shortcuts on the toolbar by commands. I am going to release my GUI and I hope any...

oltre 10 anni fa | 3 risposte | 0

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Domanda


How to copy text content from a .txt file to a .ats file?
Currently, I can only generate a txt file by fprintf(). Then I have to copy and paste the content from the txt file to a .ats. ...

oltre 10 anni fa | 1 risposta | 0

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Masked Subsystem: How to pass a double vector to a constant?
I'm not quite sure about your issue. In general, if you want to assign a value to a parameter in a masked subsystem, add it as ...

oltre 10 anni fa | 1

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GUI can't read variable with setappdata and getappdata
function pushbutton1_Callback(hObject, eventdata, handles) % hObject handle to pushbutton1 (see GCBO) % eventdata re...

oltre 11 anni fa | 0

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I have a excel file which contains both number and txt, I wanna assign whole values in this excel file to the listbox
# Import data to Matlab by implementing xlsread() # Create a cell variable and assign all the n*3 data to the cell variable

oltre 11 anni fa | 0

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Position of points relative to a plane
# Obtain the equation of the plane # If the point (x,y,z) satisfy the equation, the point is on the plane. I don't think you ca...

oltre 11 anni fa | 1

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GUI can't read variable with setappdata and getappdata
# The handle for getappdata and setappdata must be the same # If you write setappdata in the function hitung,you can get data b...

oltre 11 anni fa | 0

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Simulink the Two Degree-of-Freedom PID Control for Setpoint Tracking in help/matlab
Fig. 2 in the help document describes the equation of the DC motor.

oltre 11 anni fa | 0

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how to replace the element in matrix?
A(2,2)=12; A(3,3)=13;

oltre 11 anni fa | 14

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Can Someone Help Me WIth My Code?
You haven't defined the output y for the function. If you don't need an output, just remove 'y=' in the first line. If it's ...

oltre 11 anni fa | 0

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How to fix looping?
It seems the length of array s is 50, but you wanna call s(51) in the for loop

oltre 11 anni fa | 0

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On Simulink how to add_block with output data type boolean?
add_block('built-in/Constant','test/const1','Position',[90 20 110 40],'OutDataTypeStr','boolean','Value','1');

oltre 11 anni fa | 0

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