hi everyone, I am trying to use the function ParticlePhasePlot to plot particles' quantities. However, some unexpected results come out. I tried to plot (x-R-"d2center" , y-\Phi-"d2phi" , z-R-"d2center"), and the particles are colored by z-R-"d2center". Ideally, the color should vary monotonically along the x-axis, since the z - R is equal to x - R But the output figure shows that there are particles colored with red dispersed in the full figure. to see the output: https://github.com/yt-project/yt/issues/4887#issue-2268458159 I do not know why this happens and could you please give me some suggestions, thanks a lot! Here is the code: ##################### CODE ######################## import yt from yt.frontends import boxlib from yt.frontends.boxlib.data_structures import AMReXDataset import numpy as np rootdir="./Output" ds = AMReXDataset(rootdir+'/Plt00000') ptc_xname="d2center" ptc_yname="d2phi" ptc_zname="d2center" ptc_cmapname = "hsv" ptcslc = yt.ParticlePhasePlot( ds, ptc_xname, ptc_yname, [ptc_zname], x_bins=800, y_bins=800, ) ptcslc.set_log(ptc_xname,False) ptcslc.set_log(ptc_yname,False) ptcslc.set_log(ptc_zname,False) ptcslc.set_cmap(("particles", ptc_zname), ptc_cmapname) ptcslc.set_zlim(("particles", ptc_zname), 0.04, 0.065) ptcslc.save("testPTC") ##################### CODE ######################## best wishes, Yifeng He