Tutorial 4 Matlab OAT error

[JosephDVL]

Running CARLsim4 with Matlab 2017b, I get the following error when trying to run the OAT with the smooth output:

Expected one output from a curly brace or dot indexing expression, but there were 0 results.

Error in NetworkMonitor/setGroupPlotType (line 609)
        obj.groupMonObj{gId}.setDefaultPlotType(plotType);

Error in demoSmooth (line 27)
NM.setGroupPlotType(-1, 'heatmap')

I think that it could be fixed by updating demoSmooth.m with the following patch:

*** doc/source/tutorial/4_image_processing/scripts/demoSmooth.m.orig	2018-10-18 11:23:24.753124357 -0700
--- doc/source/tutorial/4_image_processing/scripts/demoSmooth.m	2018-10-18 11:23:28.205065731 -0700
*************** createStimFromImage('../input/carl.jpg',
*** 24,29 ****
  % Plot network activity
  clear NM
  NM = NetworkMonitor('../results/sim_smooth.dat')
! NM.setGroupPlotType(-1, 'heatmap')
  NM.plot
  
--- 24,29 ----
  % Plot network activity
  clear NM
  NM = NetworkMonitor('../results/sim_smooth.dat')
! NM.setGroupPlotType(NM.groupNames{end}, 'heatmap')
  NM.plot

However, I'm not sure if the root cause is the version of Matlab that I am using.