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Yu Li


52 total contributions since 2018

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Question


how to get the RGB number from colorbar
Hi: I have a colorbar like below: or to simplify this question, I assume the color is from blue (RGB [0,0,1]) to r...

6 days ago | 1 answer | 0

1

answer

Question


data pick by given geometry
I have a set of scatter data, I want to do someting like below: use a given coordinate in the x-y system as input use this coo...

20 days ago | 2 answers | 0

2

answers

Question


marker size difference between 'plot' and 'scatter' function
if using the same size, the plotting result using 'plot' function and 'scatter' function are significantly different. to keep...

22 days ago | 1 answer | 0

1

answer

Question


anyway to compare date in Matlab
I have two file with the same name, but different location, for example: file1: D:/test/abc.m file2: E:/test/abc.m one of t...

1 month ago | 2 answers | 0

2

answers

Question


equality between different number of variables problem
I have a cell array and the size is changing. but I want to know wether all the cells are equal. Yes, if the size of the cell...

1 month ago | 1 answer | 0

1

answer

Question


anyway to set the location of number in colorbar
I have a figure with fixed size, since the size is fixed, the location of number sometimes exceed the limit, leading to imcomple...

1 month ago | 1 answer | 0

1

answer

Question


'movefile' does not delete source file in Linux system
according to the description of function 'movefile': https://www.mathworks.com/help/matlab/ref/movefile.html if the source fil...

1 month ago | 0 answers | 0

0

answers

Question


convert number to string problem
I have a column number, and I want to add some string in front of it, and assign it to items of a drop-down list in an App. ...

2 months ago | 3 answers | 0

3

answers

Question


plot scatter after line, anyway to make the scatter overlap the line?
Hi: I plot a scatter point after a line, the result looks like the line is crossing the scatter circle. is there any way to...

2 months ago | 0 answers | 0

0

answers

Question


any way to plot scatter-line with different symbol
is there anyway to draw a scatter-line figure with different symbol like below: Thanks! Yu

2 months ago | 2 answers | 0

2

answers

Question


uigetfile, is there anyway to choose multi suffix?
I need want to choose image files, the file type is either .jpg or .png, so I need to add an additional input to determine the f...

2 months ago | 1 answer | 0

1

answer

Question


show part of filenames using uigetfile
Hi: ther are lots of files with the same suffix, such as '.mat' in a folder, I have named them based on their features, for...

2 months ago | 1 answer | 0

1

answer

Question


string not recognized problem
I'm not sure if this title is approprite but I feel this is a very weird problem there is a string 'Cfi' in the string text_tmp...

2 months ago | 0 answers | 0

0

answers

Question


arrow length problem with 'quiver' function
I want to plot arrows using 'quiver' function along a circle, the circle is within a very small radius: ~0.02 the problem is ...

2 months ago | 1 answer | 0

1

answer

Question


tangent point between two circle problem
Hi: I have two circle that does not intersect with each other, the radius and center coordinates are known. there should ha...

3 months ago | 1 answer | 0

1

answer

Question


anyway to add text with given location at a 'pixel' based figure
is there anyway to add text with given location at a 'pixel' based figure? in the link below: https://www.mathworks.com/help...

3 months ago | 2 answers | 0

2

answers

Question


matlab polyfit with ax+by=c format
Hi: is there anyway to fit a data to ax+by=c format? for the attached data, it is obviously should better to be x=0....

3 months ago | 2 answers | 0

2

answers

Question


anyway to place the text of annotation at its right side?
Hi: is there anyway to place the text of annotation at its right side? below is my code to generate the figure above: ...

3 months ago | 1 answer | 0

1

answer

Question


anyway to know the detail disk information
is there anyway to get the detail disk information, such as (HDD or SSD),brand, and size, in both windows and linux system? T...

3 months ago | 1 answer | 0

1

answer

Question


anyway to use tight_subplot function in 'invisible' figure
Hi: is there anyway to use the tight_subplot function in 'invisible' figure? https://www.mathworks.com/matlabcentral/filee...

3 months ago | 1 answer | 0

1

answer

Question


anyway to set the List Box in Appdesigner editable?
Hi: is there anyway to set the List Box in Appdesigner editable? Thanks! Yu

3 months ago | 0 answers | 0

0

answers

Question


folder path difference in 'Windows' and 'Linux' system
I found that the folder path expression is different between 'windows' and 'linux' system. for window system, it use '\' betw...

3 months ago | 1 answer | 0

1

answer

Question


copyfile function target folder name problem
I want copy a file to a targer folder but met a problem. if the targer folder name is consecutive ('no space'), it works fine...

3 months ago | 1 answer | 0

1

answer

Question


appdesigner button group problem
I have a radio button and I want to set its 'Enable' property as 'off' in a specified situation, but Matlab report error as: ...

4 months ago | 1 answer | 0

1

answer

Question


regexp problem in '.'
I have a string and I want to split it with '.', but the regexp does not work. test='abcde.abcde'; regexp(test,'.','split') b...

4 months ago | 1 answer | 0

1

answer

Question


kid-axis-coordinates in mother-axis problem
I have a mother-axis (box 1), then I use zoom in to a kid-axis, then, I plot a box and get the coordinate using function: rect_p...

4 months ago | 1 answer | 0

1

answer

Question


Position of scatter points problem
I have a set of scatter points (A), with unit of 'meter'. Then I plot them using: f = figure(1) scatter(A(:,1), A(:,2), 3, 'k'...

4 months ago | 1 answer | 0

1

answer

Question


close all hidden problem
I want to close the invisible figure in an app, but after I use command: close all hidden, the apps are becomes 'invalid or dele...

4 months ago | 1 answer | 0

1

answer

Question


imcrop not correct problem
I export a figure with 2*3 subplot, the unit of each subplot is 'pixel', meanwhile, I export the position of each subplots. ...

4 months ago | 1 answer | 0

1

answer

Question


copy the item in drop-down list of app designer
Hi: is there any way to copy the item in drop-down list of app designer? Thanks! Yu

4 months ago | 1 answer | 0

1

answer

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