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Yao Li


Shanghai Jiaotong University

Con actividad desde 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,:)]

alrededor de 5 años hace | 0

Pregunta


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...

más de 9 años hace | 1 respuesta | 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?

más de 10 años hace | 0

Respondida
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.

más de 10 años hace | 0

Respondida
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.

más de 10 años hace | 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...

más de 10 años hace | 0

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

más de 10 años hace | 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...

más de 10 años hace | 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...

más de 10 años hace | 0

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

más de 10 años hace | 0

Respondida
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...

más de 10 años hace | 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.

más de 10 años hace | 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 ...

más de 10 años hace | 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);

más de 10 años hace | 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 ...

más de 10 años hace | 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...

más de 10 años hace | 0

Pregunta


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...

más de 10 años hace | 1 respuesta | 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'...

casi 11 años hace | 0

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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...

casi 11 años hace | 3 respuestas | 0

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Pregunta


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. ...

casi 11 años hace | 1 respuesta | 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 ...

casi 11 años hace | 1

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

más de 11 años hace | 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

más de 11 años hace | 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...

más de 11 años hace | 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...

más de 11 años hace | 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.

más de 11 años hace | 0

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

más de 11 años hace | 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 ...

más de 11 años hace | 0

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

más de 11 años hace | 0

Respondida
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');

más de 11 años hace | 0

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