How to save a changed file?

I have a bot file (ascii file) with positive and negative values, so my purpose is to change the positive value to NaN (as i did it) and then save the file with the same extension, like change the value of the file, but i don't know how to save the file with the same extension . Here is my file and my code.

clear all
clc
filename='emodnet_format_Ali_new_one.bot';
deliminator = ' ';
bathy=dlmread(filename,deliminator,3,0); % read bathy-data
bathy(bathy>0)=NaN;

save('bathy.bot','-ascii');

I don't know if the final line is correct , or it may change.

[Walter Roberson]

testing...

dinfo = dir('em*');
filenames = {dinfo.name}

filenames = 1x1 cell array
    {'emodnetbathyy.txt.html'}

dbtype(filenames{1})

Answer 1

[Vidhi Agarwal]

Hi @ALI HADDACH,

To save the file you can try using "save" function of MATLAB. Refer to the following documentation to read more about it: https://www.mathworks.com/help/matlab/ref/save.html

Hope this helps!