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Keep getting this polyfit error and don't know how to fix, error using polyfit "the first two inputs must have the name number of elements"
We can't see variables app.xyears,app.yipd, but if you set a breakpoint at that line, you'll be able to look at them and you'll...

2 years ago | 1

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Answered
AVERAGE VALUES FOR .XLSX AND PLOT MATLAB R2021a
tH=readtable('historico_12.xlsx'); tH.Properties.VariableNames(1)={'Date'}; tH.Date.Format='yyyy-MM-dd HH:mm:ss'; height(tH) ...

2 years ago | 0

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Answered
How to do polyfit in loop format, for the selected plots.
... polyx = 0; for i = 1: plotdata polyp = polyx + polyfit(app.BoysCu_real(:,i),app.GirlsCu_real(:,i),1); polyfit doesn...

2 years ago | 0

Answered
Readtable not configuring delimiters correctly
If it were me and I couldn't fix the original source that created files, I'd probably fix these first, then read a cleaned versi...

2 years ago | 0

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Readtable not configuring delimiters correctly
filename = 'experiments.csv'; type(filename) The file is a list of strings; the delimiters are inside the string delimiters. ...

2 years ago | 0

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DateTime conversion with format string works with one date but not another
From the "infmt" link for datetime... hh Hour, 12-hour clock notation using two digits HH Hour, 24-hour clock notation using...

2 years ago | 0

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Answered
Matlab Showing Imaginary Numbers as Real
syms B U = 3; N = 4; g = 10; e = [0 1 2 3]; B=double(solve(U==N*sum(e.*exp(-B.*e))./sum(exp(-B.*e)),B,Real=true)) Read the...

2 years ago | 0

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Answered
Matlab Showing Imaginary Numbers as Real
syms B U = 3; N = 4; g = 10 e = [0 1 2 3]; S =solve(U==N*sum(e.*exp(-B.*e))./sum(exp(-B.*e)),B) whos S S isnumeric(S) T...

2 years ago | 0

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Daywise differences in array
R=[1982 5 1 3 25 1982 5 1 6 30 1982 5 1 12 35 1982 5 1 18 40 1982 5 2 0 45 1982 5 2 3 45 1982 5 2 6 50 1982 5 2 12 55 19...

2 years ago | 0

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Answered
Importing data from a .prc (unrecognised) filetype using variable names
Attach at least two files that illustrate the issue -- they don't have to be more than a few lines each. But, in general, you s...

2 years ago | 0

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Answered
Need help with zero-padding impacts interpretation
Compare each to the theoretical; the pointwise values are identical at the same frequency bin regardless...you might also want t...

2 years ago | 0

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Why the if loop are getting the exact values of the Kf_LMax values not the approximated values in the different phase of the Relative ligand Concentration?
Please format your code with the CODE button (or select and Ctrl-E)... You're still multiplying the exponential portion by zero...

2 years ago | 0

Answered
plot bar graph based on element type in matrix
M=randi([1 3],20,100); whos t [min(M(:)) max(M(:))] histogram(M(20,:)) xticks(1:3) xlabel('Bin'), ylabel('Count') title('C...

2 years ago | 0

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How many template of 3D graph exist in Matlab ?
And, to hopefully get your morale/optimism back up; it may not be nearly as much effort to create something like or close to the...

2 years ago | 0

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Datetime/Duration Error: Input data must be one numeric matrix when converting from a different date/time representation.
buoyF = renamevars(buoyF, {'Var1', 'Var2', 'Var3', 'Var4', 'Var5', 'Var6', 'Var7'}, ... {'Date', 'Tim...

2 years ago | 0

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Answered
Why the height of the bar3 decreases from original value as the size of the plot is varied?
data_K=[0.8741,0.7742,0.7410,0.7488]; data_S=[0.9438,0.8490,0.7821,0.7330]; data_G=[0.8992,0.8496,0.8082,0.7685]; data_TS_F1=...

2 years ago | 0

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Answered
How many template of 3D graph exist in Matlab ?
I don't know what is meant, specifically, with the reference to the data classes; particularly imaginary as MATLAB grpahics don'...

2 years ago | 2

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How do you get a variable to recognized in function
Because you didn't have a place to return the values from the function when you called it...so they were thrown away. [C,D]=Get...

2 years ago | 0

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Cell and double in datatable
readtable and friends do their best to figure out what the data types are by pre-reading and analyzing the initial content of th...

2 years ago | 0

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Answered
Scatter plot legend with multiple column ?
Actually, it's not difficult, just turn off the annotation labels for one of two scatter objects and then use the legend for bot...

2 years ago | 1

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Delete a timer object in it's callback
"Since the names given to a timer when it is declared don't really exist e.g."timer-1..." Au contraire, good buddy... tR=timer...

2 years ago | 0

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Answered
How to perform matrix math
Parallel to @Voss again with alternative MATLAB syntax and again reading the specific desired columns. What happened to the hea...

2 years ago | 1

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Pick out rows from an array where the 1st column is closest to a multiple of a number
Try %data=readmatrix('yourfile.xlsx'); data=[0 18 38 56 75 94 112].'; % sample data DELT=50; ...

2 years ago | 2

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Answered
I am trying to convert the date data from the CSV file to datetime, but it shows error, how do I fix this
@Voss showed you what was wrong in converting the dates -- your input format didn't match the actual format of your data. datet...

2 years ago | 0

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How do I point at certain columns in a .csv file and then run calculations on it?
" only want to look at data in columns starting at B10, C10, and D10 and then running ot the end of those columns. Can matlab po...

2 years ago | 0

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Read the dates in the excel sheet
w=warning('off','MATLAB:table:ModifiedAndSavedVarnames'); % stop annoying warning about names tS=readtable('sample.xlsx'); [he...

2 years ago | 0

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Fitting data to a Gaussian when data is a little bit skewed (but not too much)
xy=[1.00 NaN 2.00 4.00 3.00 3.00 4.00 6.00 ...

2 years ago | 0

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Full screen figure with xticklabels multiline problem
labels=string([ ... [repmat({'Alstom EMU250 ED250'},1,4), repmat({'Pesa Elf'},1,4), repmat({'ADtranz 113E EU11'},1,4), repma...

2 years ago | 0

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How to export 500 images in one file
"... pictures in the table to be saved in their pictural form?" An image when load in memory is just an array (2 or 3D) and so ...

2 years ago | 0

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Write Stream Binary Header with different precisions
Use fwrite with the 'precision' optional argument str='Unformatted file version=292498251'; % string as char() array N=10...

2 years ago | 1