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Spencer Chen


Last seen: 3일 전
41 2016 이후 총 참여 횟수

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Saving values from a for loop into an existing matrix
This might be your problem: for i = num_nd ... This code does not give you a proper for-loop. I'll leave you pondering on the...

3일 전 | 0

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How to generate all possible combinations of audio files?
If you have to use nchoose(), then something like this would work: combinations = nchoosek(SoundNames, 2); for i = 1:size(comb...

3일 전 | 0

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How can assign a color channel to an image series?
1) What you want to achieve get is probably something like this: RGBimage=cat(3,grayimage,zeros(size(grayimage),'uint16'),zeros...

3일 전 | 0

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How to extract multiple number data after the same specific string from a .txt file?
Something like this should get you started: txt = fileread('test.txt'); txt = splitlines(txt); for ii = 1:numel(txt) if st...

3일 전 | 0

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Taking in 2 array variables, my output variable is a single number rather than an array. Any suggestions to get my output in an array?
I guess you probably want to use the: A ./ B operation instead of the straight divide "/". Also as a recommendation, break ...

3일 전 | 0

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Rename a variable within global (function in function)
Simply assign it to another variable. global evil_global_var; saved_evil_global_val = evil_global_var; evil_global_var = new_...

13일 전 | 0

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How to get rid of the 1/f in EEG data?
polyfit() is not for estimating 1/f functions. Something like this is more appopriate: fout = fit(x,y,'(a/x)^b','Lower',[0 0])...

13일 전 | 0

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optimizing my code using vectorization methods or avoiding for loops
I would first use the "profile" function to check which part of the code is actually taking a long time. Then tackle those lines...

13일 전 | 0

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how can i solve this problem?
Maybe this will get you started. You already have in your code an example of a for-loop. To put Np into a loop, you can construc...

13일 전 | 0

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How to find conditional unique value in matrix
Maybe this will get you started: ux1 = unique(x(:,1)); % Find your unique order numbers for xx = 1:numel(ux1) idx = x(:...

13일 전 | 0

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How to find the Y Value in a Array and Locate corresponding X Value
You are on the right track. Let's start with: X=find(x1(i)~=x4(i)); Indexing into x1 and x4 is your problem here. Think abou...

13일 전 | 0

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Adi is set to 0 when i = 1
Not sure what you are trying to do with Adi. If you solve the mathematical formula: Adi = ((Vd + 1)-(Vd - 1)/(2*(.1)); Adi = (...

13일 전 | 0

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Force nansum to equal NaN (and not 0)
Try: returnMarket(all(isnan(omega)&isnan(retSize1Value1),2)) = NaN; You need to run all() on dimension 2 instead of dimension ...

19일 전 | 0

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Why do i keep getting this error???
It's hard to determine the exact problem with the information you have provided. It would be much better if you had copy and pas...

19일 전 | 0

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Colormap: ColorScale options other than linear and log (power norm, etc)
I do not think there is native Matlab feature to do that. You can convert your data into your desired log function and plot it o...

19일 전 | 0

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create a matrix from matrix with zeros elements
You can create a new matrix of the same size: B = zeros(size(A)); Then assign non-zero data in B. Blessings, Spencer

23일 전 | 0

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Issues with polynomial fit
You are fitting an order-1 polynomial, i.e. linear, so it is a bad fit. Try higher orders. But it looks like a different functio...

23일 전 | 0

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set Precision in lsqcurvefit
Check out: doc optimoptions I think something like OptimalityTolerance is what you are looking for. Blessings, Spencer

약 1달 전 | 0

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Data type conversion help
First of all, assuming that your Rpt_row_sel is a table, then Rpt_row_sel(:,2) will also output a table, which cannot be compare...

약 1달 전 | 0

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Write cell data to excel or text file in a specific format
I'm afraid that you are not clear enough for me regarding the original format of the data, so I can only guess. If you just wan...

약 1달 전 | 0

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Plotting Points at Specified Index Values
Let's separate your problem into 2 parts: (1) Plotting problem. (2) Finding location of you Maximum on the xGrid2. I'll start w...

약 1달 전 | 0

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Index in position 1 exceeds array bounds (must not exceed 1)
Try instead: layl=scanvecs{l}; Note the curly brackets to extracting the content of the cell at the indexed position. Using r...

약 1달 전 | 0

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답변 있음
Add 0.5 *0.5 degree grid on figure (country)
You can set the XTick and YTick properties of the axis. Blessings, Spencer

약 1달 전 | 1

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Cell2table header transfers
Your Test_cell format is not compatible with the SM_C table you have in Annoation.jpg. To add a new field to an existing table,...

약 1달 전 | 0

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Colormap overriden by new Parent figure
Still working on this problem if anyone has more suggestions. Attached is a screencap of my GUI with the panel on the left in t...

약 1년 전 | 0

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Colormap overriden by new Parent figure
There must be a flag somewhere so the system knows whether to override the axes colormap with the figure colormap. I cannot find...

약 1년 전 | 0

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Colormap overriden by new Parent figure
Thanks. I forgot about that. This works for my example. However, for some reason I'm still having trouble with colormap with m...

약 1년 전 | 0

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Colormap overriden by new Parent figure
I've encountered a strange problem with colormaps. When I transfer the "Parent" attribute of my axis to a new figure, then its c...

약 1년 전 | 답변 수: 4 | 0

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Permanent panel of GoTo section list
In Matlab Editor, the GoTo toolstrip will give a list of sections that allows you jump to various locations of the script. Is t...

약 1년 전 | 답변 수: 1 | 0

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NI PCIe-6353 for Simulink Desktop Real-Time OS X
I have a NI PCIe-6353 installed on a mac running OSX 10.10.5. I know there is not NI driver for this card, but since the Sim...

1년 이상 전 | 답변 수: 1 | 0

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