Answered
How to calculate the coefficient of variation in Matlab
N=30; mn=mean(reshape([time(:),speed(:)],N,[])); sd=std(reshape([time(:),speed(:)],N,[])); cv=reshape(sd./mn,[],N); return...

5 years ago | 1

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Answered
No legend when plotting fit object
Doesn't seem to be any way to prevent the builtin fit object plot() routine from adding the legend. Instead, use plot(x,myfit(...

5 years ago | 1

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Answered
How to create a new array with specific column and row thresholds from txt file
Why do you keep reverting to the hardest way possible to read in a data file? We just showed how easy it is to use readtable @...

5 years ago | 0

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Multiple 2D plots in 1 3D plot
Well, your data look nothing at all like those in the sample plot and your vectors aren't of commensurate lengths, but-- plot3(...

5 years ago | 0

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Answered
Loading a 600 mb file ends up astronomically large
Attach the file (or at least a portion of it). Memory usage is only 1:1 with disk storage for numeric data types stored as stre...

5 years ago | 0

Answered
Reading csv file and counting number of lines that have a category of interest and are below a threshold
>> data=readtable('SampleDataset03.csv'); >> sum(contains(data.Category,'A')&data.Value<0.5) ans = 64 >> For this you d...

5 years ago | 0

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Answered
plot un-equally spaced data in errorbar
You're looking for x1 = [28 56 112 224]; y1 = [21.2 18.01 16.8 14.38]; sd_vct1 = [4.93 1.77 1.81 2.32]; errorbar(x1,y1,sd_vc...

5 years ago | 0

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Answered
removing spcific numbers from matrix
Don't need (and don't use) loops -- this is MATrix LABoratory, after all! :) A=A(~ismember(A,B)); or A=setxor(A,B); is the ...

5 years ago | 0

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Answered
READ TABLE WITH DIFFERENT SETTING INSIDE
It's a fignewton of looking at the text in the editor or on the screen--some was tab-delimited, some space but there's only one ...

5 years ago | 0

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Answered
Create heatmap from table, error "'XVariable' value must reference a single variable in the source table."
The x,y variables for a table are given as the names of the wanted columns; the dot notation returns the data. heatmap(data_mea...

5 years ago | 0

Answered
Save generated points in txt file
ndgrid generates X,Y as arrays; in your case 3x3. For output you need to convert to vectors before making the table... T=table...

5 years ago | 0

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cell indexing, extracting rectangular subset
I just duplicated your example 5 times... tokens=tokens.'; % reshape to column cell array vals=cell2mat(cellfun...

5 years ago | 0

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How to build and call an array of objects containing a table of data
How about something like test=timetable(datetime(2020,2,13+[0;sort(randi(20,4,1))]),randi([120 240],5,1),'VariableNames',{'Temp...

5 years ago | 1

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Answered
How to get real p value in the 'multicompare' output table instead of rounded number
As Walter points out beflow, that it prints an integer zero indicates the calculation of the p-value underflowed and the returne...

5 years ago | 0

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Answered
How to Compare multiple rows of the Same txt file at the same time.
Read the file(s) into memory with importdata or other high-level function appropriate to the format; then use diff() on the seco...

5 years ago | 0

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finding non-zero entries of a matrix
C=A|B;

5 years ago | 1

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Answered
Resizing Figure to Make Room for Title without Resizing Plot
hAx=gca; hAx.Position=hAx.Position.*[1 1 1 0.95]; adjusts the height of axes to be 95% of default/previous height. Adjust to ...

5 years ago | 0

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Answered
fitting a sloped gaussian
First pass...overall not so great; need to do more to figure out how to model background. My spectroscopy background has dealt ...

5 years ago | 0

Answered
I am trying to find the shortest path possible in an array of numbers using MATLAB and I keep getting "Index in position 1 exceeds array bounds (must not exceed 5).". I tried changing 5 to any other number and it didn't work. Can anyone please help?
Easy to forget/overlook... n=1: ... while itr < 5 distance = distance + norm([randomA(n,1) randomA(n,2)] - [randomA(n+1,1)...

5 years ago | 0

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Answered
Writing a small epsilon in xlabel with color
W/o taking time to try to figure out specific LaTeX syntax inside MATLAB that's always a pain since know nuthink' about LaTeX ot...

5 years ago | 0

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Answered
What frustrates you about MATLAB? #2
So many of the nits in graphics are just irritants/time-consuming to make things look decent -- The inconsistency by using '%g"...

5 years ago | 1

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Using uigetfile to read in MATLAB array - index exceeds number of array elements
The form of load with an assignment on the LHS returns the content of the .mat file in a struct with the variable names in the ....

5 years ago | 0

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Answered
how can i change the color of the text in the dialog box of errordlg ?
Use the \color{specifier} modifier for the text string passed. Will have to create an options struct to set interpreter to 'Tex...

5 years ago | 0

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Answered
sorting is not sorting?!
sortrows(y,3); is a no-op because you didn't save the result. y=sortrows(y,3);

5 years ago | 0

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Answered
Add leading decimal places to numbers in text file
Air code--caution!!! c=readcell('YourTextFile.ext'); % bring file in as cellstr() array isDR=startsWith(c,'DataReg'); ...

5 years ago | 0

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Answered
Linking variable name/symbol to sequential retrieval of FRED data files.
"-the answer to your q is yes, this particular series are all on monthly freq and return the same dates." Ah! Was hoping for t...

5 years ago | 0

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Answered
how to create a chart with two x axes, one of which with month / day
Given you have 2019 in the variable names but won't give actual start/stop dates/times... x1=linspace(0,17508,17508) is a 17,5...

5 years ago | 0

Answered
how do i rearrage words in an alphabetical order in an array?
names =sort( split(' john alex peter matthew' )) names = 5×1 cell array {0×0 char } {'alex' } {'john' }...

5 years ago | 0

Answered
Output argument "x3" (and maybe others) not assigned during call to "threeptb"
I just worked through at command line -- >> fnK =@(x) (1.11 + 1.11*(x/10)^(-0.18))/(10-x); % the obj() function >> x1=1;...

5 years ago | 1

Answered
Changing file save name
Just add a counting variable that is incremented inside the inner loop-- ... j=0; for n = 1 : non_binary_images for k = 1 ...

5 years ago | 0

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