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dpb


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Answered
Looking for a faster way of finding the first element larger than a given number in a sorted array
With the JIT compiler, loops are pretty quick any more...in fact, with the starting point as the beginning loop index, that may,...

1 day ago | 2

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Answered
How to find y-axis data for a certain x-axis value
Your X variable is repeating in sets of three so when you use all 12 elements as a vector it's multi-valued in y. interp1 then ...

1 day ago | 0

Answered
Splitting a file into multiple files based on trigger words in the first column.
This is where a filter is probably best given size of file and unknown numbers between sections...and since don't need to have a...

2 days ago | 0

Answered
Why does my MATLAB icon look like a sheet of paper?
See <Why-does-my-matlab-icon-look-like-a-sheet-of-paper-on-my-windows-based-computer?> In short, somehow the link to the defaul...

2 days ago | 0

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Answered
for loop help with loop range
" extract data of the first 3 columns (x,y,z) for sensorIdx 1,2,5,6,7. For sensorIdx 3 and 4 I want to extract columns 5,6 (x,y)...

2 days ago | 0

Answered
how to extract "F-statistic vs. constant model" value for fitnlm programmatically
For some unknown reason, TMW didn't package the summary statistics with the model -- you have to run anova on the returned model...

2 days ago | 0

Answered
Inverting curves colors when the distance of their points is 0
Probably simplest is to just plot a new set of curves of the chosen color where the logical indices are -- each present line is ...

3 days ago | 0

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Answered
Speedup table lookup / interpolation
Slight alteration; didn't try to time it... [~,ix]=min(sum(abs(states_list-state),2)); is same computationally... >> x=randi(...

3 days ago | 0

Answered
How to fix the "Improper index matrix reference" error in my Data Extraction coding?
hF=openfig('NF power_Aulayers_etch_glass-by-glass_xz.fig'); hAx=hF.Children; % the axes object handle hS=hAx.Children; ...

3 days ago | 0

Answered
How to pre-select a value in a list box (GUI)
You mean a listdlg box? The 'InitialValue' property (default value 1) is the index to the selected element(s) when the box is o...

3 days ago | 0

Answered
creating a loop for a specific computation
OK, just making sure...although it may be interesting, still not positive it's of all that much use in the end...to collect data...

3 days ago | 1

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Answered
Convert an array of type char to hex values
I went back and found your first posing of roughly a week ago -- and made a comment there. In short, take Walter's advice from ...

4 days ago | 0

Answered
I am getting the following error in my code: "Unrecognized function or variable 'f'. " How do I correct this error? someone can help me in this TIA.
You're using f in line 1 while you don't define it until line 3. Move line 1 to anywhere after but before use amp in line 11 --...

4 days ago | 0

Answered
How to plot only the matches of two different datetime?
Convert A and B to timetables, then use innerjoin ttC=innerjoin(ttA,ttB); will leave timetable ttC with the times that are uni...

4 days ago | 0

Answered
How do i calculate the sum of each row
I'd suggest to use readtable instead, first... T = readtable('studentmarks.txt'); T.TotalMarks=sum(T{:,3:end},2); presuming t...

4 days ago | 1

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Answered
How do I find the corresponding date/time value of the maximum of my data in a table?
That's what the optional return index value of max is for... [mx_Smooth_Mel,ixMel]=max(T.Smooth_Melatonin_concentration); [mx_...

5 days ago | 0

Answered
converting Excel formula to Matlab (adding two arrays different lengths)
C=[0;cumsum(B)]; where B is your variable in column B MATLAB uses vector operations; to append a vector to a single value (or ...

5 days ago | 0

Answered
How can one specify the color of comparison bar chart?
Just answered for another a few minutes ago @ <problem-with-grouped-bar-plot> You also have a grouped bar plot as your data are...

5 days ago | 1

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Answered
Problem with "grouped" bar plot
"... this is not a real grouped bar plot since I am not using b = bar(model_series, 'grouped'), isn't it?" Au contraire, the do...

5 days ago | 0

Answered
Export iterative matlab program output in matrix to excel with a reduction in matrix size.
" I would like to rid of the last row and column of the 7x7 matrix and get 6x6 for further computation. " That would simply be ...

5 days ago | 0

Answered
how to run multiple number of regressions?
tRegress=rowfun(@(x,y)polyfit(x,y,1),T,'GroupingVariables',{'Location'}, ... 'InputVaria...

6 days ago | 0

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Answered
how convert the vector to matrix ? unknown number of columns
A=1:9; nRow-3; >> A=reshape(A,3,[]) A = 1 4 7 2 5 8 3 6 9 >> The posted in the...

6 days ago | 1

Answered
Divide each element of an array by the corresponding element of another array
c=a./b; Read the "Getting Started" to get basic syntax...

6 days ago | 1

Answered
How do I get a "≤" sign to appear in my function's HELP documentation?
<unicode-characters-in-m-file>

7 days ago | 0

Answered
HELP Plotting hourly time series data
Use the builtin tools and datetime instead of deprecated datenum/datetick uvFile = 'C:/Users/darcy/OneDrive/Desktop/Darcy/temp ...

7 days ago | 0

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Answered
How to plot curve instead of straight line in MATLAB?
A demo built around a rough approximation of your figure... figure % approximate the quadrilateral above plot([5 5],[250 380]...

8 days ago | 0

Answered
Compare a column in two different excel-sheet
Just read both sheets -- CODES=categorical({'bad','good'}).'; % the output categories A1=readmatrix('Workboo...

8 days ago | 0

Answered
Perform a calculation using data from multiple tables
You can probably most simply just augment your flight table...something like-- % preparations tDist=readtable('Airport distanc...

8 days ago | 0

Answered
Correct way to calculate Moving Mean for Ozone hourly values
1, 3. "movmean(A,[kb kf]) computes the mean with a window of length kb+kf+1 that includes the element in the current position, k...

8 days ago | 0

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Answered
How do I get readtable to skip lines with certain text?
That's not a great format for readtable to try to parse -- it's got the variable names as columms and so are interpreted as data...

9 days ago | 0

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