Disappearing Grid Lines

[Hydrology]

Over this last year I have had trouble getting the 3D Grid lines to show up on the GMS model display.  At first it was only once in a while, but now it has become more often than not, the grid will not display when I turn it on in Grid Options.  I have been using GMS for many years, so I generally know what I am doing, but i am at a loss as to why the grid will not display.  I can get nodes to display, but not the cell edges.  I can have two models open side by side, and one will show the grid lines and no matter what I do, the other will not.  Any suggestions?

[Hydrology]

As an update to the previous post, I have noticed that the grid will display in GMS for a new model until I click on "Activate Cells in Coverage" command.  After I activate the cells in the coverage, I can no longer display the grid.

 

[Sean Czarniecki]

I'll assume that the appropriate grid cells are active (otherwise, your model won't work).  Under the display options, have you tried showing inactive cells as well...just to see if that shows them all?  Sounds like a minor bug to report to the developers, but, then again, it sounds like it also could be model-specific, since some are fine.  Hmmmm.... Does it matter which GMS version you use?  

[Hydrology]

I can turn on the inactive grid cells and they display correctly where they are expected to be inactive.  The model runs just fine and the contours display correctly.  I have not tried using older versions of GMS to see if I still have the problem.  I am using Version 10.4.7.

[Rob Virtue]

Make sure you do not have any other coverages with "Use to define model boundary (activate cells)" selected (which it sometimes does automatically for no logical reason). Even if they are not mapped to MODFLOW, the activation will get messed up by the multiple activation coverages.