MATLAB: I can I duplicate raws of variables

duplicate raws

I have imported an xls file spread sheet and I need to replicate six time each raw.

Ex. a1,b1,c1,d1 a2,b2,c2,d2 ……………… ………………

Into a1,b1,c1,d1 a1,b1,c1,d1 a1,b1,c1,d1 a1,b1,c1,d1 a1,b1,c1,d1 a1,b1,c1,d1

a2,b2,c2,d2 a2,b2,c2,d2 a2,b2,c2,d2 a2,b2,c2,d2 a2,b2,c2,d2 ……………… ………………

Best Answer

try this standard method

 a=[1:3];
 b=[];
 for n=1:6
 b=[b a];
 end

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MATLAB: Importing large .raw file

You should avoid creating the reading object each time, and you should avoid re-doing work. And you should pre-allocate

I suspect there are more efficiencies, but it would be necessary to study the AxisFile class more carefully.

I am not clear as to why Column 3, Electrode Row 2 is being skipped? That would reduce from 12*3*3 = 96 to 93 columns, and makes it more difficult to keep track of which column holds which data.

%% Script to take raw voltage data and convert into spike data for a rasterplot
%RawV=AxisFile(‘Filename.raw’).RawVoltageData.LoadData('A1','13',[0 300]); % Loads first 5 minutes of raw voltage data from "Filename.raw", well A1, electrode 13 and stores it in the variable "RawV"
% The above command returns a 4-D cell array in which all cells are empty
% except for RawV{1,1,1,3] where {WR,WC,EC,ER}
%[t,v]=RawV{1,1,1,3}.GetTimeVoltageVector; % Retrieves voltage (v) and time (t) vectors from the above raw data set
%plot(t,v) % Plots voltage against time to visualize work so far
%%
Rows = {'A','B','C','D','E','F','G','H'}; % Array of rows
Cols = [1:1:12]; % Vector of 12 columns by 1
elecC = [1:3]; % electrode column 1 to 3 by 1
elecR = [1:3]; % electrode row 1 to 3 by 1
cntr = 1;
RawVoltageData = AxisFile('Maestro_(000).raw').RawVoltageData;
for y = Cols % Iterate over each element in Cols
    ystr = sprintf('%d', y);
    for RowVal = Rows % Iterate over each element in Rows
        x = Rows{RowVal};
        RC_str = [x, ystr]; % Combines elements from row and column variables to identify the well e.g. 'A1' from 'A' and 1 and stores as a non-string variable
        for z=elecC % Iterate over each element in elecC
            zstr = sprintf('%d', z);
            for q=elecR % Iterate over each element in elecR
                qstr = sprintf('%d', q);
                eRC_str = [zstr, qstr]; % Same thing for electrode row and colume but store as a string
                if strcmp(eRC_str,'32')
                    continue
                end
                RawV = RawVoltageData.LoadData(RC_str,eRC_str,[0 300]); % Function loads data from file 'Maestro_(000).raw': well RC_str, electrode eRC_str
                [t,v] = RawV{RowVal,y,z,q}.GetTimeVoltageVector; % Function to extract voltage vs time data from RawV: RowVal, y, z, q specify well and electrode
                if cntr == 1
                    Vdata = zeros(length(v),96);  %pre-allocate!
                end
                Vdata(:,cntr) = v;
                cntr = cntr + 1;
            end
        end
    end
end
Vdata = Vdata(:,1:cntr - 1);  %we allocated for maximum size, but some items were skipped so trim down

MATLAB: Open .raw file

Do you get "-1" for fid or for A? In the first case, there is no file with this file name. In the second case, the file contains a -1 as float32. I cannot guess, why you assume, that the file is damaged. If you have any reasons to assume, that the file contains something else, explain this with all required details.

A file, which contains a -1 might or might not be "damaged".

Best Answer

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