static GwyGraphModel*
spectra_to_graph(GwySpectra *spectra)
{
GwyGraphModel *gmodel;
const gchar* graph_title;
GwyGraphCurveModel *cmodel;
gchar *curve_title = NULL;
guint j, k, n_spectra, n_points;
GwyDataLine *dline;
gdouble *data, *xdata, *ydata, x_offset, x_realsize;
GwySIUnit *x_si_unit, *y_si_unit;
if (!(n_spectra = gwy_spectra_get_n_spectra(spectra))) {
gwy_debug("rhk-spm32: no spectra in rhkpage - something is odd\n");
return NULL;
}
dline = gwy_spectra_get_spectrum(spectra, 0);
n_points = gwy_data_line_get_res(dline);
x_si_unit = gwy_data_line_get_si_unit_x(dline);
y_si_unit = gwy_data_line_get_si_unit_y(dline);
xdata = g_new0(gdouble, n_points);
ydata = g_new0(gdouble, n_points);
x_offset = gwy_data_line_get_offset(dline);
x_realsize = gwy_data_line_get_real(dline);
for (j = 0; j < n_points; j++)
xdata[j] = x_offset+j*x_realsize;
gmodel = gwy_graph_model_new();
g_object_set(gmodel, "si-unit-x", x_si_unit, "si-unit-y", y_si_unit, NULL);
graph_title = gwy_spectra_get_title(spectra);
g_object_set(gmodel, "title", graph_title, NULL);
// tends to obstruct the curves - if there are more than a few - not
// good - makes it hard to grab curves?
//g_object_set(gmodel, "label-visible", FALSE, NULL);
for (k = 1; k <= n_spectra; k++) {
dline = gwy_spectra_get_spectrum(spectra, k-1);
data = gwy_data_line_get_data(dline);
for (j = 0; j < n_points; j++)
ydata[j] = data[j];
cmodel = gwy_graph_curve_model_new();
gwy_graph_model_add_curve(gmodel, cmodel);
g_object_unref(cmodel);
curve_title = g_strdup_printf("%s %d", graph_title, k);
g_object_set(cmodel, "description", curve_title,
"mode", GWY_GRAPH_CURVE_LINE,
"color", gwy_graph_get_preset_color(k),
NULL);
gwy_graph_curve_model_set_data(cmodel, xdata, ydata, n_points);
}
g_free(ydata);
g_free(xdata);
return gmodel;
}
static GwySpectra*
omicron_read_cs_data(OmicronFile *ofile,
OmicronSpectroChannel *channel,
GError **error)
{
GError *err = NULL;
GwyDataLine *dline;
GwySIUnit *siunit = NULL, *coord_unit = NULL;
GwySpectra *spectra = NULL;
GPtrArray *spectrum = NULL;
gchar *filename;
gdouble *data, x, y;
gdouble *coords = NULL;
gchar *buffer;
gdouble scale;
guint i, j;
gint power10 = 0;
gint ncurves = 0;
gchar* line;
filename = omicron_fix_file_name(ofile->filename, channel->filename, error);
if (!filename)
return NULL;
gwy_debug("Succeeded with <%s>", filename);
if (!g_file_get_contents(filename, &buffer, NULL , &err)) {
g_free(filename);
err_GET_FILE_CONTENTS(error, &err);
return NULL;
}
g_free(filename);
scale = channel->resolution; /* can also be extracted from min&max
raw and phys settings */
while ((line = gwy_str_next_line(&buffer))) {
if (strstr(line, ";n_curves")) {
/* Find number of curves this should appear first in file */
ncurves = g_ascii_strtod(strchr(line, ':')+1, NULL);
}
if (strstr(line, "BEGIN COORD")) {
/* Read in cordinates Spectroscopy Curves */
i = 0;
coord_unit = gwy_si_unit_new_parse("nm", &power10);
while ((line = gwy_str_next_line(&buffer))) {
gchar *val2;
if (strstr(line, "END")) {
if (i != ncurves) {
gwy_debug("Less coords than ncurves");
}
break;
}
if (i == ncurves) {
g_critical("More coords than ncurves.");
break;
}
if (!coords) {
if (!(coords = g_new0(gdouble, ncurves*2))) {
gwy_debug("Failed to allocate mem: coords");
return NULL;
}
}
val2 = line+16;
x = g_ascii_strtod(line, &val2) * pow10(power10);
y = g_ascii_strtod(val2, NULL) * pow10(power10);
gwy_debug("Coord %i: x:%g y:%g", i, x, y);
coords[2*i] = x;
coords[2*i+1] = y;
i++;
}
/* i is set to 0 and used as a counter for the dline */
i = 0;
}
if (strstr(line, "BEGIN") && !strstr(line, "COORD")) {
/* Read spectroscopy points */
dline = gwy_data_line_new(channel->npoints,
channel->end - channel->start,
FALSE);
gwy_data_line_set_offset(dline, (channel->start));
data = gwy_data_line_get_data(dline);
j = 0;
while ((line = gwy_str_next_line(&buffer))) {
gchar *val2;
if (strstr(line, "END") || j >= channel->npoints)
break;
val2 = line+13;
x = g_ascii_strtod(line, &val2);
y = g_ascii_strtod(val2, NULL)*scale;
data[j] = y;
j++;
}
/* Set Units for the parameter (x) axis */
if ((channel->param[0] == 'V') || (channel->param[0] == 'E')) {
siunit = gwy_si_unit_new("V");
power10 = 0;
}
else if (channel->param[0] == 'I')
siunit = gwy_si_unit_new_parse("nA", &power10);
else if (channel->param[0] == 'Z')
siunit = gwy_si_unit_new_parse("nm", &power10);
else {
gwy_debug("Parameter unit not recognised");
}
if (siunit) {
gwy_data_line_set_si_unit_x(dline, siunit);
g_object_unref(siunit);
}
if (power10) {
gdouble offset = 0;
gdouble realsize = 0;
offset = gwy_data_line_get_offset(dline)*pow10(power10);
realsize = gwy_data_line_get_real(dline)*pow10(power10);
gwy_data_line_set_offset(dline, offset);
gwy_data_line_set_real(dline, realsize);
}
/* Set Units for the Value (y) Axis */
siunit = gwy_si_unit_new_parse(channel->units, &power10);
gwy_data_line_set_si_unit_y(dline, siunit);
g_object_unref(siunit);
if (power10)
gwy_data_line_multiply(dline, pow10(power10));
if (!spectrum)
spectrum = g_ptr_array_sized_new(ncurves);
g_ptr_array_add(spectrum, dline);
}
}
if (!spectrum)
spectrum = g_ptr_array_new();
if (spectrum->len < ncurves) {
gwy_debug("Less actual spectra than ncurves");
ncurves = spectrum->len;
}
if (spectrum->len > ncurves) {
gwy_debug("More actual spectra than ncurves, "
"remaining pos will be set at (0.0,0.0)");
coords = g_renew(gdouble, coords, spectrum->len*2);
if (!coords) {
g_critical("Could not reallocate mem for coords.");
return NULL;
}
while (spectrum->len > ncurves) {
coords[ncurves*2] = 0.0;
coords[ncurves*2+1] = 0.0;
ncurves++;
}
}
spectra = gwy_spectra_new();
if (coord_unit) {
gwy_spectra_set_si_unit_xy(spectra, coord_unit);
g_object_unref(coord_unit);
}
for (i = 0; i < ncurves; i++) {
dline = g_ptr_array_index(spectrum, i);
gwy_spectra_add_spectrum(spectra, dline,
coords[i*2], ofile->yreal - coords[i*2+1]);
g_object_unref(dline);
}
g_ptr_array_free(spectrum, TRUE);
g_free(coords);
g_free(buffer);
return spectra;
}
