Dear, 

i think, you can try excel file to .dat file using following program 

a = xlsread('Data6.xlsx');

save 'Data6.dat' a -ASCII;

and then open  .dat file, try it. 

Hi

A general view of your import options from text files to matlab is found here http://se.mathworks.com/help/matlab/import_export/supported-file-formats.html

One of the simplest import types for numbers is to use the command

load file.txt -ascii

This produces a matrix variable calles file

Here is a small example borrowed from mathworks

a = magic(4);

b = ones(2, 4) * -5.7;

c = [8 6 4 2];

save -ascii mydata.dat a b c

clear a b c

load mydata.dat -ascii

Note that the above works only for import of numbers.

If you use instead xlsread to read Exceldata. Again a small example borrowed from mathworks

Create an Excel file named myExample.xlsx.

values = {1, 2, 3 ; 4, 5, 'x' ; 7, 8, 9};

headers = {'First','Second','Third'};

xlswrite('myExample.xlsx', [headers; values]);

Sheet1 of myExample.xlsx contains (layout below is lost):

First Second Third

1 2 3

4 5 x

7 8 9

Read data from the first worksheet.

filename = 'myExample.xlsx';

A = xlsread(filename)

A =

1 2 3

4 5 NaN

7 8 9

xlsread returns the numeric data in array A.

To put the above into a structure, e.g. called MyExample, I believe (I have not tested it) you can write

MyExample.FirstExample = file;

MyExample.SecondExample = A;

You could store the data such that

MyExample(1).Matrix = file;

MyExample(2).Matrix = A;

MyExample(2).Headers = headers;

MyExample(2).Values = values;

Hope this helps

Claes

Hello Friend,

Generally, variables present in a 'structure' may be in character form. Extract it and convert in float etc, as per your need. Similarly, if you want to append in a structures then first convert into character form

If it is written in a text file then read variables with position in line. Convert character form of data into float, integer etc. 

thanks for all ,put for more explanation 

i construct big program for multibody analysis for some part  .my problem come due to insert variables (only numbers)to program ,i define it individually in m file and this become source of error at output curves so i need to make structure to these variables and load them from text files hoping solve my problem .

if any one have example to case smellier to me ,i will be glade to him .  

Hi

These links are useful. You will find what you need.

Best regards

http://fr.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html

http://blogs.mathworks.com/pick/2011/08/05/converting-variables-to-structures-and-vice-versa/

http://stackoverflow.com/questions/9362634/creating-variables-from-structures-in-matlab