For looping figures creation

I have created code which saves a bunch of files inside a folder of my main directory.

e.g. C:\matlabstuff\Work\data

where i run all my code in Work and the data the first half of the code produces is in 'data'.

i have code which i was given by someone which starts with

[inFile,inDir]=uigetfile('*.fid','Select file');
FID=readSimpson([inDir,inFile]);

and ends with

plotSpectrum(FREQ,SPE);
shg

With proceessing and other stuff in between. I am looking to try to for loop this process so that i can select a directory as opposed to a single file, then it creates all the figures from the data and saves each figure with the names '01xxxx.fig' all the way up to ~'30xxxx.fig'

I assume this will start with something like

fids = uigetdir ('C:\matlabstuff\Work')
info = dir(fullfile(fids,'*.fid'))
list = {info.name}

which will give me the ammount of files in the directory so that i have have my for loop start as

for i = 1:length(list)

After this i am a little lost on where to go from here.

For info 'FID' is processed into 'SPE' and FREQ is generrated based on SPE.

Answer 1

[Mathieu NOE]

hello

see example code below for listing and sorting filenames in natural order (what matlab does not do well by default) in a given folder

here we load multiple excel files

hope it helps

fileDir = pwd; % current folder 
outfile = 'OUT.xlsx'; % output file name 

fileNames = dir(fullfile(fileDir,'data*.xlsx')); % get list of data files in directory
fileNames_sorted = natsortfiles({fileNames.name}); % sort file names into order (https://fr.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort)
M= length (fileNames_sorted);

out_data = [];
for f = 1:M 
    %   option # 1 for numeric data only using importdata
    raw = importdata( fullfile(fileDir, fileNames_sorted{f}));
    % vertical contatenation of all individual files data
    out_data = [out_data; raw.data];
end

% store out_data in excel file 
writematrix(out_data,fullfile(fileDir,outfile)); 
    

[Mathieu NOE]

of course , you can add your plots inside the for loop

if you need further support let me know / share your data if you want

[Ben Smith]

i have manged to make some progress using the following

fids = uigetdir ('C:\matlabstuff')
info = dir(fullfile(fids,'*.fid'))

list = {info.name}
list = natsortfiles(list) %my gawd this is useful

for i = 1:length(list)

    raw = importdata( fullfile(fids, list{i}));
    data = raw.data;
    data = data(:,1)
    FID = data;
    SPE=FT(FID);
    plotSpectrum(gca,FREQ,SPE); %plotSpectrum is a function that basically just uses the normal plot function but sets a few things like colours and x and y max values
end

The final trouble i think i am having is that the plotting only plots one of them when in reality i would like it to plot the figure according to plotSpectrum, then to save and close the spectrum so that the next cycle of the loop can start.

[Mathieu NOE]

ok

you need to create each figure before calling plotSpectrum

for i = 1:length(list)
    raw = importdata( fullfile(fids, list{i}));
    data = raw.data;
    data = data(:,1)
    FID = data;
    SPE=FT(FID);
    
    figure(i);
    plotSpectrum(gca,FREQ,SPE); %plotSpectrum is a function that basically just uses the normal plot function but sets a few things like colours and x and y max values
end

[Ben Smith]

i know you can open a figure to extract data with

fig = openfig(figfile,'invisible');

could i go the same here someway so the figures dont actually flash up on my screen?

And how do i save these figures with different names based on i?

somthing like this?

saveas (gcf, {i}xxx)

[Ben Smith]

savefig ('stuff')

Having this in the loop seems to work but it just overrides each one so that i end up with only a single figure saved

[Mathieu NOE]

do :

filename = ['stuff' num2str(i)];
savefig(filename)