Python subplot within a loop first panel appears in wrong position

Question

I am fairly new to Python and come from a more Matlab point of view   I am trying to make a series of 2 x 5 panel  contourf subplots   My approach so far has been to convert  to a certain degree  my Matlab code to Python and plot my subplots within a loop  The relavent part of the code looks like this   fig plt figure figsize  15  6  facecolor  w   edgecolor  k   for i in range 10         this part is just arranging the data for contourf      ind2   py find zz  i 1      sfr mass mat   np reshape sfr mass ind2   pixmax x pixmax y       sfr mass sub   sfr mass ind2      zi   griddata massloclist  sfrloclist  sfr mass sub xi yi interp  nn         temp   250 i    this is to index the position of the subplot     ax plt subplot temp      ax contourf xi yi zi 5 cmap plt cm Oranges      plt subplots adjust hspace    5 wspace  001        just annotating where each contour plot is being placed     ax set title str temp     As a newbie to this forum  i dont seem to be allowed to attach the resulting image  However  going by my indexing in the code as  temp  the resulting layout of the the 2 x 5 panels is   251 - 252 - 253 - 254 - 255 256 - 257 - 258 - 259 - 250   However  what i want is   250 - 251 - 252 - 253 - 254 255 - 256 - 257 - 258 - 259    That is  the first panel  250  appears in the last position where i would think 259 should be  And 251 seems to be where i want 250 to be placed  They all seem to be in the correct sequence  just circularly shifted by one   I know this will be something very silly  but appreciate any help you can give   Thank you in advance

User · Accepted Answer

Using your code with some random data  this would work   fig  axs   plt subplots 2 5  figsize  15  6   facecolor  w   edgecolor  k   fig subplots adjust hspace    5  wspace  001   axs   axs ravel    for i in range 10        axs i  contourf np random rand 10 10  5 cmap plt cm Oranges      axs i  set title str 250 i     The layout is off course a bit messy  but that s because of your current settings  the figsize  wspace etc

User · Answer

The problem is the indexing subplot is using  Subplots are counted starting with 1  Your code thus needs to read  fig plt figure figsize  15  6  facecolor  w   edgecolor  k   for i in range 10         this part is just arranging the data for contourf      ind2   py find zz  i 1      sfr mass mat   np reshape sfr mass ind2   pixmax x pixmax y       sfr mass sub   sfr mass ind2      zi   griddata massloclist  sfrloclist  sfr mass sub xi yi interp  nn         temp   251 i    this is to index the position of the subplot     ax plt subplot temp      ax contourf xi yi zi 5 cmap plt cm Oranges      plt subplots adjust hspace    5 wspace  001        just annotating where each contour plot is being placed     ax set title str temp     Note the change in the line where you calculate temp

User · Answer

Basically the same solution as provided by Rutger Kassies  but using a more pythonic syntax   fig  axs   plt subplots 2 5  figsize  15  6   facecolor  w   edgecolor  k   fig subplots adjust hspace    5  wspace  001   data   np arange 250  260   for ax  d in zip axs ravel    data       ax contourf np random rand 10 10   5  cmap plt cm Oranges      ax set title str d

[python] Python: subplot within a loop: first panel appears in wrong position

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