read-open many files

Question

Thar 2015-7-10

评论： Thar 2015-7-11

Hi all!

I have 200 files with name day_0012014 until day_2002014. Each file has 3 columns. I want to plot first and third columns. What can i do?

Thanks...

Answer 1

Azzi Abdelmalek 2015-7-10

编辑：Azzi Abdelmalek 2015-7-10

You didn't specify the type of files (text file or Excell or ...). Suppose they are text files

for k=1:200
     FileName=sprintf('day_%03g2014.txt',k)
     data{k}=dlmread(Filename)
end

Now you can access to each matrix

figure
hold on
for k=1:numel(data)
   c1=data{k}(:,1)
   c3=data{k}(:,3)
   plot(c1,c3)
end 
hold off

Thar 2015-7-11

my files are txt.

all these files are in my desktop in a file with name measurments.

I wrote the path in the filename like

FileName=sprintf('C:\......Desctop\measurments\day_%03g2014.txt',k)

but it has wrong:

Undefined function or variable 'Filename'.

Thank you