将 PostScript 图 "无损" 转换为 SVG | Convert PostScript to SVG "losslessly"

Typst 目前并不支持 PostScript 甚至 PDF, 若文档需要插入 PGPLOT 绘制的 .ps 图, 需要转换. 以下探索了一种 看起来 无损 转换为 SVG 的方法.
Typst does not support PostScript and even PDF for now, if need insert .ps figure plotted by PGPLOT in document, it nees convert. Here discovered a method to convert PS to SVG that seems losslessly.

for f in *.ps; do 
  eps2eps $f $f.eps;
  gs -dBATCH -dEPSFitPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=$f.eps.pdf $f.eps
  qpdf $f.eps.pdf  --rotate=180 -- $f.eps.rotated.pdf
  inkscape --export-type=svg --export-area-drawing $f.eps.rotated.pdf
  rm $f.eps $f.eps.pdf $f.eps.rotated.pdf
done

注意很多其它方法会导致内部位图被降采样.
Notice that many other methods may downsample internal rastered image.

注意对不同软件绘制的图, 需要旋转的度数不同 (例如 PulsarX 180 度, PRESTO 与 DSPSR/PSRCHIVE 90 度).
Notice for figure plotted by different software, degrees of rotation is different (e.g. 180 deg for PulsarX, 90 deg for PRESTO and DSPSR/PSRCHIVE).