dpb

Last seen: Today

5 105 total contributions since 2012

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Answered
Plot segments of an array with NaN using a for loop
Rough outline to accomplish -- ix=find(isnan(A)); ix=ix(2:end); % find the NaN sections, ignore first for i=1:numel(ix)...

environ 8 heures ago | 0

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Convert Text into Date Format
>> datetime('196307','InputFormat','yyyyMM') ans = datetime 01-Jul-1963 >> or >> datetime([floor(196307/100) 196307...

1 jour ago | 1

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x-axis difference between two graphs
As suggested above, interp1 works just fine... red=readtable('red.txt');black=readtable('black.txt'); % read data plot(red.Va...

1 jour ago | 0

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finding cells with positive values in a cell array with empty cells, cells of positive integers, and cells of nans
>> idx=cellfun(@(c)any(c>0),co_burst); >> whos idx Name Size Bytes Class Attributes idx ...

1 jour ago | 0

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Match timestamps from different data sets
See <matlab timetables> for the introduction to using timetables In particular for your particular Q? read the Topic on Resampl...

1 jour ago | 0

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How can I read text files and compile a joint XY Position history
Well, it does seem to "just work" -- almost. jsondecode doesn't know about the 2D array bit, but it did decode the JSON info bl...

2 jours ago | 0

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While loop in if and for loop
for i = 2:N if Gyr_2(i,3) Output=RBK2(Input); elseif Gyr_2(i,1) || Gyr_2(i,2) || Ori_2(i,1) || Ori_2(i,2) Output...

2 jours ago | 0

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How to suppress opening of command window?
Use the -batch option See <matlabwindows> for all startup options (windows, there are other links for other OS)

2 jours ago | 0

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creating a coundown alarm everytime a function have been asked
function [] = alarm(varargin) % alarm -- display countdown left % Optional arguments % 'init' -- reset counter persisten...

2 jours ago | 0

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How to use Xlswrite command in actxserver and how to avoid script gets hanged due to hworkbook.close command?
". I just need to avoid xlswrite in my command" Indeed. You don't want to be running dueling ActiveX processors at the same ti...

2 jours ago | 0

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Fill in missing data, unrecorded values, multiple columns
"am somewhat new to matlab and this is all I need help with..." In that case, you're doing well indeed! Congratulations!!! :)...

2 jours ago | 0

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How to code an equation with a variable that implies to all cell and save in same size of input array (using nested for loop)
data =xlsread('***'); minOverall=min(data,[],'all'); rngOverall=range(data,'all'); data=(data-minOverall)/rngOverall; Given ...

2 jours ago | 0

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How to return entire elements of a column of a matrix while that column includes maximum value of among all other elements of matrix
[~,ix]=max(max(A)); % return column of max of 2D array B=A(:,ix); % the resulting column Too bad there's...

3 jours ago | 0

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Change file matlab workspace name as the folder name
" 'POWER.mat' , and the folder name is 'Results2021'" Well, it depends on whether you have already created the .mat file by hav...

3 jours ago | 1

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Answered
Three variables (two independent) 3D plotting
M=1; N=2; flg=true; for B=-20:20; X=M+B;l T=[]; for L=-10:10; Y=N+X; r=B+Y+L^2; sca...

3 jours ago | 0

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How can we convert struct file to txt file?
arrayfun(@(s) writematrix([s.S s.F],[s.ID '.txt']),structWheeze)

3 jours ago | 0

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How can I link data from separate arrays?
Making harder than needs must be -- Thickness=[19.0;22.0;32.0]; Temp_data=cat(3l [0,-0.05;0.2,-0.13;0.4,0.25;0.6,0.64;0.8,0.56...

4 jours ago | 1

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Answered
How to find corresponding frequencies after viewing amplitude in descending order?
[DescendAmp,idx] = sort(peak_ft,'descend'); disp([peak_fr(idx) peak_ft])

4 jours ago | 0

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plot discontinuous x axis
Divide the time vector by T(end) for each trace and then plot versus the normalized time [0 1] instead...

4 jours ago | 0

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How to Enclose a Figure Title in a Box?
hT=title('This is a title','EdgeColor','k');

4 jours ago | 0

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Comparing date/time values in Matlab/ calling out date time values to use in code
Convert to a timetable and all kinds of tools are available; see <Overview Timetables> for all of the above kinds of operations

6 jours ago | 0

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Creating a Histogram of Letter grades converted from number grades
One way that illustrates lookup table approach... GRADES=[0,60,69.9,73.9,76.9,79.9,83.9,86.9,89.9,94.9,95.9,100]; % letter grad...

7 jours ago | 0

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Bestfit value doesn't match with the plotted value
Because you used gaussian_fn= @(q,x) (q(1)^2.*exp(-2.*((x-q(2)).^2)/q(3).^2)); as your fitting function -- in which q(1) is sq...

7 jours ago | 0

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Groupsummary on timetable with cell/matrix data
Took a little head-scratching, but the following appears to work as desired-- fnMN3=@(c){mean(cat(3,c{:}),3)}; % functio...

7 jours ago | 0

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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(mn./sd,[],N); return...

8 jours ago | 0

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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(...

8 jours ago | 0

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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 @...

8 jours 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(...

8 jours 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...

8 jours ago | 0

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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...

8 jours ago | 0

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