Question

How to keep information private?

when I googled my names, all my activities( like asking questions, my profile) in Mathworks show up. I am wondering if I can kee...

1 month ago | 1 answer | 0

Question

how to expand 2D array?

Hi I create an array with shape of (2, 4), now I'd like to expand the array by 2 times in rows and 2 times in columns so the sh...

3 months ago | 1 answer | 0

Question

use xlread to read csv file with mixed type data is very slow

Hi I have a csv file with mixed data type like below, first column is string, 2nd column is numerical, 3rd column tothe end c...

10 months ago | 1 answer | 0

Question

Is there a PDF for all Matlab Functions?

Hi There is online version of list of all functions. https://www.mathworks.com/help/matlab/referencelist.html?type=function&li...

1 year ago | 1 answer | 0

Question

plot distribution without interpolated contour

Hi Could you please help me with one question which has been with me for a long time? The below left figure show contour plot ...

1 year ago | 0 answers | 0

Question

interpolation with non-zero data only when using griddata

Hi Happy New Year! Could anyone here help me with below issue? I am trying to show the contour of Well Injection Pressure ...

1 year ago | 1 answer | 0

Question

how to control movie play rate?

Hi I am using videowriter and writevideo to generate a movie. The movie generated play too fast so I cannot see it. I am won...

3 years ago | 0 answers | 0

Question

Can I use subvolume for 2d dateset?

I have a 2d dataset with northing easting coordinates. I like to extract a sub area with 4 corner points defined. Can I use subv...

3 years ago | 0 answers | 0

Question

how to redraw contourf after changing scale

I used contourf. after changing the scales like colorbar min/max/interval, contour line interval etc, how to redraw the contour ...

3 years ago | 2 answers | 0

Answered

Python-like generator for reading large CSV file?

Thank you, Guillaume. That is awesome! I appreciate it.

Python-like generator for reading large CSV file?

Thank you, Guillaume. That is awesome! I appreciate it.

3 years ago | 0

Question

single precision data for griddata()

Hi when I use griddata(x,y,v, xq,yq), x,y,v,xq,yq are all single-precision data to save the memory. but there is an error say...

3 years ago | 3 answers | 0

Question

Python-like generator for reading large CSV file?

I have a large csv file, typically I just read everything into a array like this num =csvread(filename,2,2) if csv file is...

3 years ago | 2 answers | 0

Question

how to plot this time contour?

<</matlabcentral/answers/uploaded_files/108409/10.JPG>> Hi I saw someone plot this time countour. I don't know how to plot...

3 years ago | 0 answers | 0

Question

Out of Memory for using many global variables

Hi I have many functions. so instead of use the variables as function arguments to transfer values between functions. I set m...

3 years ago | 0 answers | 0

Answered

how to read big excel file faster?

Thanks Walter and Bob, are you guys talking about the same thing like using actxserver('Excel.Application') when Walter was sayi...

how to read big excel file faster?

Thanks Walter and Bob, are you guys talking about the same thing like using actxserver('Excel.Application') when Walter was sayi...

3 years ago | 0

| accepted

Answered

How to display trendline equation on the plot?

ok, I got it now. here are my codes, fittedlinecrossplot=polyfit(xdata_crossplot,ydata_crossplot,trendlinepolynomialcoeff)...

How to display trendline equation on the plot?

ok, I got it now. here are my codes, fittedlinecrossplot=polyfit(xdata_crossplot,ydata_crossplot,trendlinepolynomialcoeff)...

3 years ago | 1

| accepted

Question

how to read big excel file faster?

Hi I have a big excel file like 200MB and I am using xlread(). It is easier to use xlread(). But as the number of variables i...

3 years ago | 2 answers | 0

Question

How to display trendline equation on the plot?

Hi I got the trendline using polyfit() and polyval(). and use plot() to the plot the trendline. Now my question is how to ...

3 years ago | 1 answer | 0

Question

how to plot the lower or upper boundary lines for scatter data?

Hi I have a scatter plot. I'd like to plot the lines connecting the points either the upper or lower bound. How to do it? ...

3 years ago | 1 answer | 0

Question

how to control xticklabel location?

Hi I change y limit, then my xticklabel location is aligned with previous y limits. For example, in the attached figure, o...

3 years ago | 0 answers | 0

Question

How to format x date axis?

Hi I did try to find a answer online but I didn't get a good one so I am asking here for clearer help. In my plot (z vs. d...

3 years ago | 1 answer | 0

Question

pole plotting on stereonet

Hi Anyone has codes for plotting stereonet? especially plot pole projection on lower hemisphere only. Thanks

3 years ago | 2 answers | 0

Question

How to find position of a time vector in another time vector?

Hi I have two time vectors, one has random time spacing like A=[' 01/01/2001', '05/01/2001, ....], the other time vector has ...

3 years ago | 1 answer | 0

Question

what is the equivalent function in 2014b for resample()?

Hi resample() function is not available in version 2014b. could anyone point me some equivalent functions? Basically, what I ...

3 years ago | 1 answer | 0