need help with fprintf

Hi all,

I have this line of script where it takes a parameter text file (par.txt) and changes the variables for calibration purpose.

fout=fopen('par.txt','w+')
fprintf(fout,'wcwp\t%6f\t%6f\t%6f\t%6f\t%6f\r\n', x(1),x(1),x(1),x(1),x(2)); 

Here, I'd like to implement this line so I can increase the values at a same rate as the other varialbes

fprintf(fout,'wcwp\t0.4*%6f\t0.4*%6f\t0.4*%6f\t0.4*%6f\t0.4*%6f\r\n', 0.4,0.4,0.4,0.4,0.8);

But, once I run this script, my output looks like this;

wcwp 0.4*0.400000 0.4*0.400000 0.4*0.400000 0.4*0.400000 0.4*0.800000

I need to find a way where I can have %6f value multiply by something and still show the final answer to the txt file

Any help would be appreciated

Answer 1

[Walter Roberson]

fprintf(fout,'wcwp\t%6f\t%6f\t%6f\t%6f\t%6f\r\n', 0.4*([x(1),x(1),x(1),x(1),x(2)]); 

[Jung]

Thanks for the reply.

What if instead of fixed value, such as 0.4 in the example, I'd like a range of value for x(1)... so that whenever I calibrate the data, the rate/percentage of differences is constant for x(1) and x(2).

For instance, I would want my parameters to be calibrated within the 10% range so [0.9 to 1.2] so these values would be multiplied by variables

[Walter Roberson]

Change the 0.4 to a variable name of a variable you calculate just before this.