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Are Matlab's built in functions typically faster than user created functions?
Generally the builtins will be faster owing to that they're compiled code as opposed to m-files which are interpreted. Although...

約9年前 | 2

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Issue in finding Power Spectral Density of fitted curve
Evaluate the fit at the desired frequency for however long you have data and pass that result to |*fft*| *ADDENDUM:* See the...

約9年前 | 0

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How to use a slider to move through plots
Well, the following runs but isn't yet ready for prime time...needs some "prettying-up" to move the slider out of the way from o...

約9年前 | 0

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約9年前 | 1

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Is there any difference between n(i,1) and n(i) in calculation when n is a vector? I got super weird thing......
You have _time(i)_ in one expression and _times(i,1)_ in the other. Those aren't the same variable so don't necessarily have sa...

約9年前 | 0

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How to create a user interface for a function in Matlab?
Or, just use the builtin widgets interface to get the parameters _may_ be enough... fn=uigetfile('*.xls','Select Input File...

約9年前 | 0

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Chi-square distribution plot
Because |chi2gof| returns bin edges, need to convert to centers -- x=filter([0.5 0.5],1,st.edges); x=x(2:end); % average s...

約9年前 | 0

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Create a difference vector of time
I'd make a minor change-- A = cell2mat(textscan(fileID,'%D %D','collectoutput',1)); to convert the cell arrays to an arr...

約9年前 | 1

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Unable to use linkaxes after using clf on figures due to invalid axes error [Solved]
Not enough to see which axes were linked, but if you've linked (as it seems from the description) the axes in _figNum_ to those ...

約9年前 | 0

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Different columns for the same X-axe in stacked bar figure
|bar| is very difficult function in Matlab when you want anything they've not already canned for you, and while using _'grouped'...

約9年前 | 2

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Obtaining slope from fitlm results
Oh, it's a tangled web TMW has weaved, fer shure...what with all the different mechanisms to do the same thing in different tool...

約9年前 | 6

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Fit function - plot only line, without the data points
How did you create the plot? If I use fp=fit(x,y,'poly1'); plot(fp) I don't get anything but the line. But, use t...

約9年前 | 0

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Array value changing for no apparent reason?? Is it possible there is hidden lines of code?
But you've got sweepData(sweepData<=threshold) = threshold; in here that _will_ change |sweepData| if there's any valu...

約9年前 | 1

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How to fix this error ?
Seemingly a candidate for the FAQ -- <https://www.mathworks.com/matlabcentral/answers/346984-how-can-l-import-historical-stock-d...

約9年前 | 0

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Fingerprint matching minutiae comparison
That will simply test two axes handles to see if they match; since you've got two different images the answer to that questi...

約9年前 | 0

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How can l import historical stock data from yahoo with matlab?
See <https://www.mathworks.com/matlabcentral/answers/335973-can-t-connect-to-yahoo?s_tid=answers_rc1-3_p3_Topic <335973-can-t-c...

約9年前 | 0

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FormatSpec for mixed entry of Input
>> s='ASC2007252381128.0000.T88.ch04.sac E'; % sample input record >> fmt='%s %*s'; % read ...

約9年前 | 1

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For Loop Indices Manipulation
OK, from that definition, a looping solution. function dO2Conc = O2Solver(t,O2Conc,c,O2Leak,nodes,slt_nodes) dO2Conc= ...

約9年前 | 0

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Convert comma-separated decimal to point-separated decimal
t.Var=str2double(strrep(t.Var,',','.'); for affected each variable _'Var'_ in |table| _'t'_. Can generalize into loop or...

約9年前 | 1

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Matrix Algebra without Loop
With recent release (R2016b?) there's automagic expansion that'll _probably_ do what you want....prior to that, |*bsxfun*| does ...

約9年前 | 0

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good evening , iam getting error as (im2jpeg(x, quality) Error using im2jpeg (line 21) The input must be a UINT8 image) at line 21 . how can i resolve it in the below code
The problem isn't in the code in the function, it's in what you're passing to it as an input image. The function is written to ...

約9年前 | 0

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How do I label the grouped horizontal bars in MATLAB?
I don't have HG2 so can't test and the solution to find the bar positions that worked with HG1 does _not_ work with HG2. Contri...

約9年前 | 0

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Plot data with time in miliseconds
>> fmt='yyyy-MM-dd HH:mm:ss.SSS'' >> dtn=datetime('2017-06-12 13:46:31.486','Inputformat',fmt) dtn = 12-Jun-2017 13:4...

約9年前 | 1

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Find value in matrix that matches calculation
|*==*| is an exact match to the LSB if these values are differing in some decimal position then eledata = (data(2:end,4))=...

約9年前 | 2

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Fitting my parametric function to experimental data from excel.
Use the custom |*fittype*| to define the equation and the |*fit*| with it.. pf_eqn = fittype('p1^a + p2^b + p3^c + p4^d+ p5...

約9年前 | 0

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Fitting data for each row of a matrix
Guessing the intent Stephen has asked for, x=1:8; % the independent variable vector nrow=size(dat...

約9年前 | 0

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Matlab Table / Dataset type optimization
_"Matrix is very fast, [but] you can't always remember variable name by column index."_ If speed is the goal, you can't beat ...

約9年前 | 1

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Delete Empty Rows in a Cell Array
[~,~,raw]=xlsread('StimuliInExcel.xlsx', 'WilliamsList'); raw=raw(~all(cellfun(isempty,raw),2),:); xlswrite('StimuliInEx...

約9年前 | 0

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Change x-axis label font size?
See <http://www.mathworks.com/help/matlab/ref/numericruler-properties.html <numeric ruler properties>>. Have to have HG2 (R2014...

約9年前 | 0

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How to clear a variable if "clear" is itself a variable?
See previous poster's dilemma resolved at <https://www.mathworks.com/matlabcentral/answers/35475-overwrote-clear-function?s_tid=...

約9年前 | 1

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