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Opened 4 years ago

Last modified 4 years ago

#1663 confirmed defect

VisIT CarpetHDF5 plugin pseudocolor error

Reported by: bruno.giacomazzo@… Owned by:
Priority: major Milestone:
Component: Other Version: development version
Keywords: visit Cc: reisswig@…

Description

This problem has been present since the CarpetHDF5 plugin for VisIt became part of the standard VisIt distribution and it is still present in the current version of VisIt (2.8).

When Pseudocolor is used in log scale and Centering is set to Original or Nodal, not all the values of the plotted quantity are shown (in particular lower values are not plotted at all). This does not happen if one sets Centering to Zonal, which instead shows the correct values.

I have attached a couple of images showing the problem (they show hydrobase::rho for a BNS run).

I do not know what may be causing it, but it may cause serious errors when analyzing data with VisIt (since one may miss some of the information on the low value regions).

Attachments (2)

visit_images.tgz (178.6 KB) - added by bruno.giacomazzo@… 4 years ago.
visit images
rho_it25216.xy.h5 (1.6 MB) - added by bruno.giacomazzo@… 4 years ago.
HDF5 data used to produce the figures

Download all attachments as: .zip

Change History (6)

Changed 4 years ago by bruno.giacomazzo@…

Attachment: visit_images.tgz added

visit images

comment:1 Changed 4 years ago by bruno.giacomazzo@…

please note that visit_nodal.png (contained in the tgz file) actually shows the effect of pseudocolor when one sets Centering to Zonal (sorry for the mistake in the name of the file).

Changed 4 years ago by bruno.giacomazzo@…

Attachment: rho_it25216.xy.h5 added

HDF5 data used to produce the figures

comment:2 Changed 4 years ago by Ian Hinder

Status: newconfirmed

comment:4 Changed 4 years ago by bruno.giacomazzo@…

Thanks a lot for the suggestion.

I confirm that turning off the 'Apply color using textures' flag in Top-menu->Options->Rendering->Advanced solves the problem in my case (see https://elist.ornl.gov/pipermail/visit-users/2015-January/016895.html)

Maybe this should be explicitly mentioned somewhere. In the cactus web page there used to be a page with info about visualization (http://cactuscode.org/documentation/visualization/VisIt/), but it seems to be outdated. Maybe it could go in the ET wiki?

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