MATLAB: Rewrite CSV First Column

csvloopMATLABvector

Hi I was hoping someone can help me with my code, I'm new to matlab

data=csvread('TP4765.csv')% Import data

N=size(data,1);% determine number of increment

m=0.001;

%%%%%%%%%%%%%%%%%

the csv is 2052766×7 matrix

I would like like to replace the first colum with a vector starting from 0 in increment "m" for N times(increase 0.001 increment 2052766 times)

Thanks

Thuan

Best Answer

 m = 0.001;
 N = 2052766;
 data(:,1) = 0 : m : N*m - m;
 dlmwrite('TP4765.csv',data)

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MATLAB: Rename files in a directory

Another possible solution:

f = dir('*.csv');
for kk = 1:numel(f)
  fileFrom = f(kk).name;
  fileTo = ['data',erase(f(kk).name,'0.csv'),'.csv'];
  movefile(fileFrom,fileTo);
end

MATLAB: Simple “While Loop” questions

vsl will never equal 0.1. See the FAQ: http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F And you don't need all those double ranges - checking if it's in the middle. Just check if it's less than the number - it will go into the first one it meets the criteria for.

% Calculate the gas fraction
vsl = 0.001; 
vsl1 = vsl; 
vslSave = [];
while vsl<=10
  if vsl < 0.01
    increment = 0.001;
  elseif vsl < 0.1
    increment = 0.01;
  elseif vsl < 1.0
    increment  = 0.1;
  else
    increment = 1;
  end
  
  vsl = vsl + increment;
  vslSave = [vslSave;vsl];
end
vslSave = [vsl1;vslSave]

Best Answer

Related Solutions

MATLAB: Rename files in a directory

MATLAB: Simple “While Loop” questions

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