anchor.diff:  cate res open cloud local.CLOUD_2007
   cate res open ozone local.OZONE_2007
   
  -rem Create subsets of the "cloud" and "ozone" resources and assign it
  +rem Coregister "ozone" with "cloud" and call the result "ozone_coreg"
  +rem: ERROR HERE, see issue #241
  +cate res set ozone_coreg coregister ds_master=@cloud ds_slave=@ozone
  +
  +rem Create subsets of the "cloud" and "ozone_coreg" resources and assign it
   rem to new resources named "cloud_sub" and "ozone_sub"
   cate res set cloud_sub subset_spatial ds=@cloud region=0,30,10,40
  -cate res set ozone_sub subset_spatial ds=@ozone region=0,30,10,40
  +cate res set ozone_sub subset_spatial ds=@ozone_coreg region=0,30,10,40
   
  -rem Coregister "cloud_sub" with "ozone_sub" and call the result "cloud_res"
  -cate res set cloud_res coregister ds_master=@ozone_sub ds_slave=@cloud_sub
  +cate res set corr pearson_correlation ds_x=@ozone_sub ds_y=@cloud_sub_resamp var_x=O3_du_tot var_y=cc_total file=corr.txt
  +
  +cate res print corr
   
   rem Save the workspace
   cate ws save
  
positive.code: rem Exit interactive session. Don't ask, answer is always "yes".
  cate ws exit --yes
  
  cd ..
  
negative.code: @echo off
  
  rem Download some CCI Cloud data
  cate ds copy esacci.CLOUD.mon.L3C.CLD_PRODUCTS.MODIS.Terra.MODIS_TERRA.1-0.r1 --name CLOUD_2007 --time 2007,2008
  