thank you very much,
it worked perfectly.
Francisco
On Tue, Jan 11, 2011 at 5:17 AM, David Necas (Yeti) <[email protected]>wrote:
> On Mon, Jan 10, 2011 at 06:08:01PM -0300, Francisco Balzarotti wrote:
> > I'm working with a homemade afm, I'd like to export files from the
> > acquisition software (that I wrote) to Gwyddion.
> > I'd like to export topography and error images. No additional data.
> >
> > I'm not quite sure which is the most suitable -and simple- file format to
> > use. Any thoughts?
>
> If you don't mind having each channel as a separate file then GSF
>
> http://gwyddion.net/documentation/user-guide-en/gsf.html
>
> that was created for this purpose. It can be saved by simple code such
> as
>
> static void
> save_gsf(GwyDataField *field, const gchar *filename)
> {
> const gchar header_template[] =
> "Gwyddion Simple Field 1.0\n"
> "XRes = %u\n"
> "YRes = %u\n"
> "XReal = %g\n"
> "YReal = %g\n"
> "XYUnits = m\n"
> "ZUnits = m\n"
> "Title = Topography\n";
> const gchar padding[4] = { 0, 0, 0, 0 };
>
> gchar *header = g_strdup_printf(header_template,
> field->xres, field->yres,
> field->xreal, field->yreal);
> gsize len = strlen(header);
> gsize npad = 4 - (len % 4);
> gsize i, n = field->xres * field->yres;
> gfloat *fltdata = g_new(gfloat, n);
> FILE *fh = fopen(filename, "wb");
>
> if (fh) {
> for (i = 0; i < n; i++)
> fltdata[i] = field->data[i];
> fwrite(header, len, 1, fh);
> fwrite(padding, npad, 1, fh);
> fwrite(fltdata, sizeof(gfloat), n, fh);
> fclose(fh);
> }
> else {
> fprintf(stderr, "Cannot open %s: %s\n", filename, strerror(errno));
> }
> g_free(fltdata);
> g_free(header);
> }
>
>
> Regards,
>
> Yeti
>
>
>
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