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Welton Investment Partners

Active since 2011

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Answered
Excel Date column Plot in Matlab
look up datenum and datetick

11 years ago | 0

Answered
every second label is showed in corr.matrix only, why?
You set the labels, but not the ticks themselves. Try something like this: set(gca, 'XTick',1:19); set(gca,'XTickLabel'...

11 years ago | 0

Question


Setting the figure "Tag" property for a waitbar
Hi folks, Hoping one of you has an easy solution for me. Skipping over the non-relevant details, Im trying to add a tag to a ...

12 years ago | 1 answer | 1

1

answer

Answered
how to read the Sheet name present in any Excel file ?
"xlsfinfo" will get you a list of sheet names.

12 years ago | 6

| accepted

Answered
a question regarding the format of dates
If I were in your situation, I would try and do the formatting in Excel first and get all dates uniform before importing into MA...

12 years ago | 0

Answered
Why I got complex answer while I know it should be real????
My guess, and this may be a long shot, is that somewhere along the way you took the sqrt of -1.

12 years ago | 0

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Answered
limited number of Assets in a universe, with constraints.
As stated, that's a very difficult problem. There are roughly 9e93 different ways to select a subset of 50 assets from a univers...

12 years ago | 0

Answered
Make dataset arrays part of base MATLAB?
I agree 100% and have advocated for this since they were first released in 2007-2008(?) The difference between dataset object...

12 years ago | 1

| accepted

Answered
For stand-alone exe, how do I include a folder of files and know how to access them.
When you concatenate strings using "[...]" the way you wrote above you are missing the "\" between the file name and path (on Wi...

12 years ago | 0

Answered
Xtick in timeseries Plot
This may not be the cleanest solution, but it should work well enough, or give you some ideas at least. 1) Draw your graph ...

12 years ago | 0

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Answered
How to fit histogram data with normfit using signed X-axis ?
You should be calling normfit on the raw data vector itself, not your pdf approx: [mu , sigma, blah...] = normfit(Vx)

12 years ago | 1

Answered
How send Matlab (.mat file) output to a webpage
Last I checked (2 years ago), you can compile a call to the Neural Network Toolbox "sim" function. You cant compile any type of ...

12 years ago | 0

Answered
image/imagesc scaling colors to a specific range
Ok - I think I have an answer to my own question. This seems to be doing the trick: c1 = 2*rand(5,5); c2 = 2*rand(5,5...

12 years ago | 3

| accepted

Question


image/imagesc scaling colors to a specific range
Hi folks, Im hoping some of you image processing gurus know how to do this with little effort. I have 2 matrices with simi...

12 years ago | 2 answers | 0

2

answers

Answered
""variable name" was previously used as a variable" error message
The problem is in your call to "quadl", you dont need the "@" sign. NC is a function handle, not a function, so you dont need th...

12 years ago | 1

Answered
Creating a subset of a dataset array based on values in one of the variables
Similar to per isakson's suggestion, but with proper indexing on the "Hospital" column: >> subset = your_ds_array( strcmp( ...

12 years ago | 1

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Answered
How to graphing a 3D surface when the X,Y,Z are known
I typically use 3 2-dimensional matrices - one for each coordinate (t,T,Y) - each position corresponds to a combination of a t a...

12 years ago | 0

Answered
Matlab publish command use cases
I use it every afternoon to update research reports based on new data that are referenced by my colleagues. I publish to html an...

12 years ago | 1

Answered
Imported Excel strings are not functioning correctly in matlab 2012b
Just a guess, but "names" is probably a cell array, so names(1,1) and names(1,2) are 1x1 cell arrays. You need to get access to ...

12 years ago | 0

Answered
Dynamic ranges using xlswrite
You can do this by dynamically creating the character string that you send to xlswrite to specify xl range. Something like th...

12 years ago | 4

| accepted

Answered
How to use the value of a variable as a variable?
You could use a structure and define fields indirectly using the current value of "A": >> A = 'BC' A = BC ...

12 years ago | 1

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Answered
How to run multiple instances of MCR
I built something in the past as a test that was able to do this - if I recall it wasnt too difficult (and Im not very proficien...

12 years ago | 0

Answered
Combine rand function with exponential cdf
Search in the Statistics Toolbox Documentation for "Inversion Methods"(You can look online if you dont have access to the Toolbo...

12 years ago | 0

Answered
Replace NaNs with previous values
I do this all the time, my code uses for loops, but I dont see anything wrong with for loops. Im sure there are more elegent sol...

12 years ago | 0

Answered
Could someone help me import data from a .csv file?
If you have the Statistics Toolbox,try: ds = dataset('File','summary.csv','Delimiter',','); The fact that you have mixe...

12 years ago | 0

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Answered
Why doesn't this program work?
The only row vector vs. column vector issues I see here (I ran the code) is between "rpm" and "count". rpm is defined to be a...

12 years ago | 0

Answered
Where can I find code that is written to plot functions better than the built-in MATLAB plotting functions?
Ive been creating alot of ppt presentations lately with snapshots of figures from MATLAB. To facilitate this, I created a short ...

12 years ago | 0

Answered
Pointer to MATLAB function?
Do a search in the docs on function handles. They should do the trick.

12 years ago | 0

Answered
Trouble w/ MLGetVar and MLGetMatrix using Dataset arrays
I highly doubt that MlGetVar/Matrix support dataset arrays which are in the Statistics Toolbox. It would be nice if they did, ev...

12 years ago | 0

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Answered
How do I let users read files (new data) into deployed compiled code?
Let them browse for it with some sort of UI. You can use functions like "uigetfile" to get the file name and path.

12 years ago | 0

| accepted

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