如何在循环中而不是单独的图表上在同一图表上绘制点？

Question

I am trying to plot multiple points in a text file onto the same chart within a loop. However, currently my code plots each point as a separate chart.

modname = ['model_a', 'model_b', 'model_c', 'model_d', 'model_e', 'model_f']

d = pd.read_table("sample.txt")

for mdl in modname:
  pod=d[ (d.MODEL == mdl) & (d.SCORE == "PODY")].VALUE
  far=d[ (d.MODEL == mdl) & (d.SCORE == "FAR")].VALUE
  csi=d[ (d.MODEL == mdl) & (d.SCORE == "CSI")].VALUE
  bias=d[ (d.MODEL == mdl) & (d.SCORE == "FBIAS")].VALUE
  sro = 1 - far

  print mdl
  print pod
  print far
  print csi
  print bias
  print sro

fig = plt.figure(figsize=(12,12))

for mdl in modname:
  plt.scatter(sro,pod,color=leg_col[i],marker='.',s=750)
  plt.savefig(imgdir+outf)

I shortened aspects in the second loop for the example here. I expect one chart with 6 points on it but I get 6 charts with one point on them. I'm not sure if I have my loop set up incorrectly or I'm saving my data wrong. The data is coming from a text file with headers separated by spaces.

Answer 1

change

for mdl in modname:
  plt.scatter(sro,pod,color=leg_col[i],marker='.',s=750)
  plt.savefig(imgdir+outf)

to

for mdl in modname:
  plt.scatter(sro,pod,color=leg_col[i],marker='.',s=750)

plt.savefig(imgdir+outf)

you are saving every loop