I am still trying to update the row names of a uitable in a matlab gui. I previously asked you about this (https://stackoverflow.com/questions/21585453/update-rows-name-of-uitable-in-matlab-gui). However, I am writing you again in order to let you know that I am not able to solve this problem.
This is the part of my code where I am stuck:
function SavePushButton_Callback(~,~)
%%##
data{1,1}= get(h5Out,'string');
data{1,2}= get(h6Out,'string');
data{1,3}= get(h7Out,'string');
data{1,4}= get(h8Out,'string');
===============================
% Update the data %
oldData = get(t,'Data');
newRow = cat(0,data,cell(0,size(data,2)));
newData2 = [oldData; newRow];
set(t,'Data',newData2);
===============================
% this part of the code should Update the name of the rows %
rowname = get(h1Out,'string');
NewRowName = cat(0,rowname,cell(0,size(rowname,1)));
rowname2= [rowname; NewRowName];
set(t,'Rowname',rowname2);
end
It looks like the function to set the Rowname is expecting a cell array of strings, however you're giving it a cell array of cells, which themselves contain strings. This is because the get function (for example data{1,1}= get(h5Out,'string'); ) is already returning a cell array containing a string, and you're storing it within another cell array ( data ). Use () instead of {} on the data matrix in order to concatenate the individual cells into one single cell matrix. In other words, change:
data{1,1}= get(h5Out,'string');
data{1,2}= get(h6Out,'string');
data{1,3}= get(h7Out,'string');
data{1,4}= get(h8Out,'string');
to:
data(1,1)= get(h5Out,'string');
data(1,2)= get(h6Out,'string');
data(1,3)= get(h7Out,'string');
data(1,4)= get(h8Out,'string');
Related
My goal is to load some files listed in the table, extract the data, and save the results as a variable of the first file name. The lists in the table are user-input characters, which represent the names of the files that will be loaded soon. I'll give you an example because you may not understand what I mean. When A,B,C (strings) are listed in the table, my code will find where they are located(eg A.txt) and load their data. After the data has been collected from them, the results are saved in the name of the table like this : A(variable)= result_data(:4). Here is my code. please let me know the wrong place. (Note that table is nx1 cell array using uitable.)
function pushbutton1_Callback(hObject, eventdata, handles)
data = get(handles.uitable,'data'); % get strings in table
for i = 1:size(data(:,1)) % count the #strings
fid = fopen([ data(i),'.csv' ]); %load the data and extract what I need
...
fclose(fid);
data(i) = result(row_1:row_2 , 4) % this is the result_data
% data(i) is variable string, so I am not sure whether to use the eval function.
end
Without having your table to debug further here is my suggestions. data is probably a cell array since you are pulling it from a uitable as below.
data = get(handles.uitable,'data'); % get strings in table
So this line should error:
fid = fopen([ data(i),'.csv' ]);
Change it to this:
fid = fopen([ data{i},'.csv' ]);
or this:
fid = fopen([ char(data(i)),'.csv' ]);
When saving your results to the variable name which matches your string I would suggesting using a structure with dynamic field names instead of a bare variable ... otherwise you will probably have to use eval which should be avoided.
So this (which isn't what you asked for):
data(i) = result(row_1:row_2 , 4) % this is the result_data
Should become:
outData.(data{i}) = result(row_1:row_2 , 4) % this is the result_data
If data is a cell array like you said containing {'A','B','C',...}
Then outData would be of the form below and contain each results.
outData.A
outData.B
outData.C
I have a dataset that I would like to categorise and store in a structure based on the value in one column of the dataset. For example, the data can be categorised into element 'label_100', 'label_200' or 'label_300' as I attempt below:
%The labels I would like are based on the dataset
example_data = [repmat(100,1,100),repmat(200,1,100),repmat(300,1,100)];
data_names = unique(example_data);
%create a cell array of strings for the structure fieldnames
for i = 1:length(data_names)
cell_data_names{i}=sprintf('label_%d', data_names(i));
end
%create a cell array of data (just 0's for now)
others = num2cell(zeros(size(cell_data_names)));
%try and create the structure
data = struct(cell_data_names{:},others{:})
This fails and I get the following error message:
"Error using struct
Field names must be strings."
(Also, is there a more direct method to achieve what I am trying to do above?)
According to the documentation of struct,
S = struct('field1',VALUES1,'field2',VALUES2,...) creates a
structure array with the specified fields and values.
So you need to have each value right after its field name. The way you are calling struct now is
S = struct('field1','field2',VALUES1,VALUES2,...)
instead of the correct
S = struct('field1',VALUES1,'field2',VALUES2,...).
You can solve that by concatenating cell_data_names and others vertically and then using {:} to produce a comma-separated list. This will give the cells' contents in column-major order, so each field name fill be immediately followed by the corresponding value:
cell_data_names_others = [cell_data_names; others]
data = struct(cell_data_names_others{:})
This is a bit of a long problem:
I am building an extension to some already existing software that outputs data as a structure array each time it is run. They always have the same name (structureArray)
I want to take all of these structure arrays and use them for analysis in a single code with for loops and cell arrays.
So I now have 3 structure arrays from this existing software, which I have named structureArray1, structureArray2 and structureArray3. I have used the following method for putting each of these into a cell array called "storage".
[filename, pathname] = uigetfile('*.mat','Please select your structure arrays',...
'Multiselect','on');
storage = cell(1,numel(filename));
for x = 1 : numel(filename)
storage{x} = load([pathname filename{x}]);
end
Now here's the problem:
in each structureArray(1,2,3) (now within "storage") there is a matrix called "magV". I would like to have a 1x3 cell array, with the first cell containing magV from structureArray1, the second cell containing magV from structureArray2 and so on...
My attempt so far:
magnitude_V = cell(1,numel(storage));
for y = 1 : numel(storage)
magnitude_V{y} = storage{1,y}.structureArray1.velocityMap.magV;
end
But because all of the structure arrays have a different number at the end, I can't use this method...
Thank you so much for any help because this is driving me mad -.-
You can refer to a structure's fied by a string in parenthesis, e.g. sometruct.('somefield'):
magnitude_V = cell(1,size(storage,2));
for y = 1 : size(storage,2)
magnitude_V{y} = storage{y}.(['structureArray' num2str(y)]).velocityMap.magV;
end
I have a loop which runs 100 times. In each iteration there is a string, double and a table assigned, and in the next iteration new values are assigned for them. What I want to do is to accumulate these values and after the loop finishes save the total result as result.mat using the matlab save function. I've tried putting them in cell-array but its not working so far, so if anyone could please advise how this can be done.
This is what I did:
results_cell=(100,3);
.
.
.
results_cell(i,1)=stringA;
results_cell(i,2)=TableA;
results_cell(i,3)=DoubleA;
But it gives this error Coversion to Cell from Table is not possible. So I've tried converting TableA to array of Doubles using table2array but I still get this Coversion to Cell from Double is not possible
I think using a structure would be a good way to store your data, since they are of different types and you can assign it meaningful field names for easy reference.
For example, let's call the structure Results. You can initialize it like so.
Results = struct('StringData',[],'TableData',[],'DoubleData',[])
Since you know its dimensions, you can even do this:
N = 100;
Results(N).StringData = [];
Results(N).TableData = [];
Results(N).DoubleData = [];
This automatically create a 1xN structure with 3 fields.
Then in your loop you can assign each field with its associated data like so:
for k = 1:N
Results(k).StringData = String(k);
Results(k).TableData = Table(k);
Results(k).DoubleData = Double(k);
end
where String(k), Table(k) and Double(k) are just generic names for your actual data.
When you're done with the loop you can access any type of data using a single index and the right field name.
In order to save a .mat file, use something like this:
save SomeFileName.mat Results
Which you can load into the workspace as you would with any .mat file:
Eg:
S = load('SomeFileName.mat')
R = S.Results
Hope that helps!
I have a cell array that is a list of file names. I transposed them because I find that easier to work with. Now I am attempting to go through each line in each cell and remove the lines based on their file extension. Eventually, I want to use this list as file names to import data from. This is how I transpose the list
for i = 1:numel(F);
a = F(1,i);
b{i} = [a{:}'];
end;
The code I am using to try and read the data in each cell keeps giving me the error input must be of type double or string. Any ideas?
for i = 1:numel(b);
for k = 1:numel(b{1,i});
b(cellfun(textscan(b{1,i}(k,1),'%s.lbl',numel(b)),b))=[];
end;
end;
Thanks in advance.
EDIT: This is for MATLAB. Should have been clear on that. Thanks Brian.
EDIT2: whos for F is
Name Size Bytes Class Attributes
b 1x11 13986188 cell
while for a is
Name Size Bytes Class Attributes
a 1x1 118408 cell
From your description I am not certain how your F array looks, but assuming
F = {'file1.ext1', 'file2.ext2', 'file3.ext2', 'file2.ext1'};
you could remove all files ending with .ext2 like this:
F = F(cellfun('isempty', regexpi(F, '\.ext2$')));
regexpi, which operates on each element in the cell array, returns [] for all files not matching the expression. The cellfun call converts the cell array to a logical array with false at positions corresponding to files ending with .ext2and true for all others. The resulting array may be used as a logical index to F that returns the files that should be kept.
You're using cellfun wrong. It's signature is [A1,...,Am] = cellfun(func,C1,...,Cn). It takes a function as first argument, but you're passing it the result of textscan, which is a cell array of the matching strings. The second argument is a cell array as it should be, but it doesn't make sense to call it over and over in a loop. `cellfun´'s job is to write the loop for you when you want to do the same thing to every cell in a cell array.
Instead of parsing the filename yourself with textscan, I suggest you use fileparts
Since you're already looping over the cell array in transpose-step, it might make sense to do the filtering there. It might look something like this:
for i = 1:numel(F);
a = F(1,i);
[~,~,ext] = fileparts(a{:});
if strcmpi(ext, '.lbl')
b{i} = [a{:}'];
end
end;