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20210813 - Latest Filament data
Available data for 20210813: »06 UTC   »07 UTC   »08 UTC   »09 UTC   »10 UTC   »11 UTC   »12 UTC   »13 UTC  
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  Color  xc   yc  (LatLon LCarr)  Area Length Branches (  x0/y0     x1/y1  )  Tilt Location
      1  849 1337 (N28E06 L=189)   218    110        1 ( 821/1294- 882/1379) -63.4 E07-E04 N25-N31
      2 1367  431 (S39W14 L=210)   333     61        0 (1331/ 411-1391/ 448)   0.0 W11-W16 S40-S37
      3  982  244 (S47E22 L=173)   404     53        2 ( 958/ 221-1003/ 268)  78.7 E24-E19 S49-S44
      4 1057  240 (S49E16 L=179)   389     36        2 (1033/ 222-1080/ 260) -11.3 E18-E13 S51-S46
  
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IDL code for reading binary data:
    OPENR, u, binfile, /COMP, /GET_LUN
    head = FLTARR(6) ;[xsize,ysize,radius,hh,mm,ss]
    READU, u, head
    data = INTARR(FIX(head[0]),FIX(head[1]))
    READU, u, data
    FREE_LUN, u
    
  • each filament has the value of Fil_ID
  • all values are in pixel
to get the area of a filament:
  c = WHERE(data EQ Fil_ID, area)
  f = '(2(A,I6))'
  PRINT, FORM=f, "Area of Fil_ID", Fil_ID," =", area 
be careful: y-origin is upper left! you can transpose the data:
  data = ROTATE(data,7)
  Solar_y = 2048-Solar_y