how to save variable as txt in a specified location with variable value appearing in the file name

clear all
clc
a=1; % amplitude du faisceau gaussien
x=linspace(-50,50,100);
dx=50/2.355; % widthn
f=a*exp(-0.5*(x./dx).^2);
[pks, locs, width]=findpeaks(f,x)
plot(x,f)
path='c:/users/user/desktop';
save('Gauss',num2str(width),'.txt', 'f','-ascii')

hello guys

i want to save My "f" variable as a txt file in the path location and i want to name the following file as Gauss.value of width.txt

i tried the following code but i get a error:

error using save '47.7723' is not a valid variable name

error in line 10

thank you in advance for your help

Answer 1

[Chunru]

a=1; % amplitude du faisceau gaussien
x=linspace(-50,50,100);
dx=50/2.355; % widthn
f=a*exp(-0.5*(x./dx).^2);
[pks, locs, width]=findpeaks(f,x)

pks = 0.9997

locs = -0.5051

width = 47.7723

plot(x,f)

% don't use "path" as a variable name
% path='c:/users/user/desktop';

folder = '';        % Modify this

save(fullfile(folder, 'Gauss.txt'),  'f', '-ascii')
type Gauss.txt

   6.2473520e-02   6.9801253e-02   7.7812158e-02   8.6546338e-02   9.6043268e-02   1.0634135e-01   1.1747741e-01   1.2948623e-01   1.4239994e-01   1.5624747e-01   1.7105399e-01   1.8684023e-01   2.0362195e-01   2.2140926e-01   2.4020606e-01   2.6000945e-01   2.8080918e-01   3.0258714e-01   3.2531691e-01   3.4896333e-01   3.7348223e-01   3.9882014e-01   4.2491418e-01   4.5169196e-01   4.7907167e-01   5.0696225e-01   5.3526363e-01   5.6386723e-01   5.9265638e-01   6.2150706e-01   6.5028864e-01   6.7886476e-01   7.0709433e-01   7.3483264e-01   7.6193254e-01   7.8824568e-01   8.1362384e-01   8.3792034e-01   8.6099136e-01   8.8269740e-01   9.0290467e-01   9.2148643e-01   9.3832434e-01   9.5330972e-01   9.6634466e-01   9.7734315e-01   9.8623201e-01   9.9295167e-01   9.9745685e-01   9.9971711e-01   9.9971711e-01   9.9745685e-01   9.9295167e-01   9.8623201e-01   9.7734315e-01   9.6634466e-01   9.5330972e-01   9.3832434e-01   9.2148643e-01   9.0290467e-01   8.8269740e-01   8.6099136e-01   8.3792034e-01   8.1362384e-01   7.8824568e-01   7.6193254e-01   7.3483264e-01   7.0709433e-01   6.7886476e-01   6.5028864e-01   6.2150706e-01   5.9265638e-01   5.6386723e-01   5.3526363e-01   5.0696225e-01   4.7907167e-01   4.5169196e-01   4.2491418e-01   3.9882014e-01   3.7348223e-01   3.4896333e-01   3.2531691e-01   3.0258714e-01   2.8080918e-01   2.6000945e-01   2.4020606e-01   2.2140926e-01   2.0362195e-01   1.8684023e-01   1.7105399e-01   1.5624747e-01   1.4239994e-01   1.2948623e-01   1.1747741e-01   1.0634135e-01   9.6043268e-02   8.6546338e-02   7.7812158e-02   6.9801253e-02   6.2473520e-02

Answer 2

[KSSV]

path='c:/users/user/desktop';
filename = [path,filesep,'Gauss',num2str(width),'.txt'];
fid = fopen(filename,'w') ;
fprintf(fid,'%f\n',f);
fclose(fid) ;

Answer 3

[Mathieu NOE]

hello

try with (last two lines)

f = f';
save(['Gauss' num2str(width) '.txt'], 'f','-ascii')