GDLSSW005_en, EPS, MDI, and Trace (2)

Notebook for using SSW (Solar Soft Ware) on GDL (GNU Data Language).


As described in the previous article, I try to re-make a figure made on IDL in the past, to confirm how SSW works on GDL.

The following figure is the figure 3 of Yamamoto & Sakurai (2009, PASJ, 61, 75).

The following figure is made on GDL with the procedure that is used for the above figure.

These figures are converted to JPG files from EPS files with 'convert' command.

Followings are differences between these figures.

• Different figure sizes. (the original figure is 8cm width and 8cm height.)
• Different fonts. (The original font is Times-Roman.）
• Different colors of field-strength contours. (width of contours may be different.）
• (Variations of green look different)

In GDL, PLplot is used for plotting.

Plot region is one of the fundamental settings, and font is another.

So, now PLplot does not work well on GDL.

The overwritten contours may be a problem of GDL.

In GDL, although there is no 'xloadct,' one can use 'loadct'.

On X-window, contours (plot_map,/over,lcolor) are overwritten in a single color.

However, I plot a new map after this plotting, a changed color-bar is used in this new map.

A plotted map on X-window.

A new map in changed color-bar.

As a conclusion on GDL, 'It is OK as quick-look, but one cannot do precise settings'.

To write a scientific paper, these errors are so bad.

We should improve GDL.


In reading TRACE data, several messages appear.

But, GDL did not stop.