The code I'm using imports data from multiple files and saves them into an array of cells, the code is as follows:
[FileName,PathName,FilterIndex] = uigetfile('*.txt*','MultiSelect','on');
numfiles = size(FileName,2);
FileData= cell(1,numfiles);
for ii = 1:numfiles
FileName{ii};
A=[];
entirefile =fullfile(PathName,FileName{ii});
fid = fopen(entirefile);
tline = fgets(fid);
while ischar(tline)
parts = textscan(tline, '%f;');
if numel(parts{1}) > 0
A = [ A ; parts{:}' ];
end
tline = fgets(fid);
end
fclose(fid);
FileData{ii} = A;
A = FileData{ii};
X = A(:,1);
Y = A(:,5);
DataToUse = [X,Y];
end
Now my issue is I want to use the first DataToUse created by the loop, which will be data from the first file, seperatley to the other files but I can not issolate it. I have tried DataToUse(1), DataToUse(1,1) and DataToUse(:,[1,2]) but none are working for me. An example of the type of data would be:
DataToUse=
0.0762 0.0271
0.0763 0.2671
0.0764 0.4079
0.0765 0.0510
0.0766 0.0087
0.0767 0.0099
0.0768 0.0067
0.0769 0.0047
0.0770 0.0047
0.0771 0.0349
0.0772 0.2094
0.0773 0.2740
0.0774 0.0294
0.0775 0.0100
0.0776 0.0159
I have different numbers of this kind of data depending on how many files are selected but I would like to only use the first initially and use the others later. Anybody know how I can go about doing this? Many thanks in advance
The solution is to use cell arrays, like so:
DataToUse{ii} = [X, Y]
To get the desired output put this after your for-loop:
firstLoopXY = DataToUse{1}
Enjoy!
Related
I could able to interpolate and plot chlorophyll concentration with respective x ,y. Now I need to display within a specific range of values. For example value between 0 and 10 as in the code below
ncfile_1 = 'A20150322015059.L3m_MO_CHL_chlor_a_4km.nc';
lat_1 = ncread(ncfile_1,'lat') ;
lon_1 = ncread(ncfile_1,'lon') ;
chlor_a_1 = ncread(ncfile_1,'chlor_a');
[X_1,Y_1] = meshgrid(lon_1,lat_1) ;
xi_1 = linspace(30,100,1000) ;
yi_1 = linspace(0,30,1000) ;
[Xi_1,Yi_1] = meshgrid(xi_1,yi_1);
iwant_1 = interp2(X_1,Y_1,chlor_a_1',Xi_1,Yi_1)' ;
pcolor(xi_1,yi_1,iwant_1'); shading interp;
c = colorbar;
cmap = jet(255);
cmap(:,3) = 0;
colormap(cmap)
caxis([0, 10])
I could plot figure but the levels in the plot seems wrong. Please point out the mistake in my code.
I have tried with this code but doesn't work
if chlor_a_1>=0 && chlor_a_1<=10
disp(chlor_a_1);
[Xi_1,Yi_1,chlor_a_1] = peaks;
plot(Xi_1,Yi_1,chlor_a_1,49)
I am a beginner on Matlab. Any help is highly appreciated.
I have two sets of arrays stored in a file and I need to extract values one by one and compare them. I am using this code but does look like I am doing correctly.
# First Dataset
File.foreach(file_set_a) do |data_a|
data_array_a = data_a.split("\t")
#file_name_a = data_array_a[0]
#file_ext_a = data_array_a[1]
# Second Dataset
File.foreach(file_set_b) do |data_b|
data_array_b = data_b.split("\t")
#file_name_b = data_array_b[0]
#file_ext_b = data_array_b[1]
#Compare
#file_name_a == #file_name_b
end
end
The problem is, I cannot go back and extract the next values in the set A when I enter the set B. Any suggestions?
First, convert those 2 files into two separated data arrays
lines_array_a = File.readlines(file_set_a)
lines_array_b = File.readlines(file_set_b)
I am assuming both of the array size will be same. Now run a loop and get the items from both array to compare them.
for i in 0..(lines_array_a.count - 1) do
data_array_a = lines_array_a[i].split("\t")
#file_name_a = data_array_a[0]
#file_ext_a = data_array_a[1]
data_array_b = lines_array_b[i].split("\t")
#file_name_b = data_array_b[0]
#file_ext_b = data_array_b[1]
#file_name_a == #file_name_b
end
Can someone guide me to do this in the best possible way using matlab.
i have files with names 001_g_01.sig...001_g_08.sig, 002_g_01.sig...002_g_010.sig, 003_g_01.sig...003_g_08, upto n files.
what i want to do is assigning labels to files belong to one user (i.e.001_g_01.sig...001_g_08.sig as "User1", 002_g_01.sig...002_g_010.sig as "User2" and so on).
i have the following code to read the files.
dirName= '/FolderPath';
files = dir( fullfile(dirName,'001_g_1.Sig') );
files = {files.name};
dirName1= '/FolderPath';
files1 = dir( fullfile(dirName1,'*.Sig') );
files1 = {files1.name};
for i=1:length(files)
fname = fullfile(dirName,files{i});
%# some calculation
for j=i+1:length(files1)
fname1 = fullfile(dirName1,files1{j});
%# some calculation
end
end
files1 =
'001_g_01.sig'
'001_g_08.sig'
'003_g_01.sig'
.
.
If files1 is a cell like above, then you can write:
userlabel = {'001','002','003'};
f = cellstr(files1);
for ii = 1:3
result{ii} = strncmp(userlabel(ii),f,3);
end
You can do it in this way:
label = [repmat('User1',size(files,1),1); repmat('User2',size(files1,1),1) ];
This will create a array of labels containing 'User1' and 'User2'. If you need it separately, you can do it:
label1 = [repmat('User1',size(files,1),1)];
I am working in MATLAB.
I have a function that loops through all the files in a directory, runs them and concatenates their dataset outputs into a single dataset.
Is there a way that I can alter my function so that it outputs all the individual datasets as well as the unified one?
Below, the array named "FileInfo" has 3 columns. The first has the file name, and the second and third columns are the inputs
function [AllFunOutputs] = RunAllFuns(FileInfo)
fileDir = dir('C:\MATLAB\Funs'); % get all file names in directory 'Funs'
files = {fileDir.name};
funNames = strrep(files, '.m', ''); % strip the '.m' suffix from all files
funNames(:,1:2) = [];
funNames = transpose(funNames);
k = 1; % below, match the function name with its argument
for i=1:length(FileInfo)
if strcmp(FileInfo(i,1),funNames(k,1))
funNames(k,3) = FileInfo(i,2);
k = k+1;
end
end
% create function handles
fh_array = cellfun(#str2func,{funNames{:,1}},'UniformOutput', false);
X = []; % below, concatenate all output datasets into a single dataset
for i=1:size((funNames),1)
X=[fh_array{i}(funNames(i,2),(funNames(i,3)))];
X = X+1;
end
so..... why doesn't this work to give me the output dataset of all the functions?
nFcns = numel(fh_array); % number of functions to evaluate
for i=1:size(nFcns)
[allresults] = feval(#(i)funNames(i,2),funNames(i,3));
end
Thank you so much for your help and time!
EDIT 3
Hi! I had problems with the matrix dimensions but I've solved it. Now my problem is that I want to do the same operation on a large series of files on the same folder and I want write the output values on a separate line on text.txt. With the first one it works but it doesn't 'write' to the 'text', the rest. Is there something wrong?
myPath = 'C:\EX\';
a= dir (fullfile(myPath,'*.DIM'));
fileNames = { a.name };
% Rename files
for k = 1:length(fileNames)
newFileName = [fileNames{k}(1:2) fileNames{k}(4:6) '.txt'];
movefile([myPath fileNames{k}], [myPath newFileName]);
end
filePattern=fullfile( myPath,'*.txt');
txtFiles= dir(filePattern);
for k = 1:length(txtFiles)
baseFileName=txtFiles(k).name;
fullFileName= fullfile(myPath,baseFileName);
fid=fopen(fullFileName, 'r');
for i = 1:18
m{i} = fgetl(fid);
end
result2 = m{18};
result2b= result2([12:19]);
fid=fopen(fullFileName, 'r');
for i = 1:30
m{i} = fgetl(fid);
end
result3 = m{30};
result3b= result3([12:19]);
fid=fopen(fullFileName, 'r');
for i = 1:31
m{i} = fgetl(fid);
end
result4 = m{31};
result4b= result4([12:20]);
fid=fopen(fullFileName, 'r');
for i = 1:19
m{i} = fgetl(fid);
end
result5 = m{19};
result5b= result5([12:20]);
text= {baseFileName, result2b, result3b, result4b, result5b};
final= [Fields'; text];
end
Really thanks in advance!
Index exceeds dimensions is exactly what it means.
Try to put a breakpoint at the line where it occurs and check the dimension of result2. Assuming it is a vector, you will find that its length is less than 19.