[yt-users] Coexistence of positive and negative values on a SlicePlot in log scale

Hi, I understand that typically the negative values would appear as white color on a log slice plot. However, if I directly plot the fields that are generically defined in FLASH, the negative values DO appear correctly. For example, the velx field: http://pbrd.co/1jz3iqR. But for any derived fields, for example, defining velx1 = 1.*velx, the negative values appear white again: http://pbrd.co/1jz4oD8. So, is there anyway to show both positive and negative values on a log slice plot for derived fields (I’m using YT2)? Thanks! Best wishes, -- Suoqing JI Ph.D Student Department of Physics University of California, Santa Barbara CA 93106, USA