# Grdview -T **URL:** \ **Category:** Q&A\ **Created:** [April 17, 2023, 10:19am UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851 "2023-04-17T10:19:33Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Kompass17](https://avatars.discourse-cdn.com/v4/letter/k/0ea827/32.png) [@Kompass17](https://forum.generic-mapping-tools.org/u/Kompass17)\ **Post date:** [April 17, 2023, 10:19am UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/1 "2023-04-17T10:19:33Z")
`gmt grdview $tmp/tmp2.grd -K -O -R -JX -T+o0.5p,255+s -Cbackdrop.cpt` is supposed to outline each tile. In GMT4.5 it did (the -T option without “+”). In GMT6.0.0 it seems to outline the boundary to NaN’s and -R[region] of the combined set. With `gmt grd2xyz ... | awk '! /NaN/{print $0}' | gmt psxy ... -SS` directly after produces what I want—with assistance from a previous gmt grdinfo to get the scaling right. The former elegance is gone. I tried a lot of variations of the -T option’s arguments to no avail. Any suggestions? ---
**Author:** ![Andreas](https://avatars.discourse-cdn.com/v4/letter/a/ee7513/32.png) [@Andreas](https://forum.generic-mapping-tools.org/u/Andreas)\ **Post date:** [April 17, 2023, 10:44am UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/2 "2023-04-17T10:44:28Z")
Don’t have an answer, but you need to update your gmt version; 6.4.0 is the latest. 6.0.0 is over three years old. ---
**Author:** ![Joaquim](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/joaquim/32/16_2.png) [@Joaquim](https://forum.generic-mapping-tools.org/u/Joaquim)\ **Post date:** [April 17, 2023, 11:56am UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/3 "2023-04-17T11:56:54Z")
Can you provide an short full working example (MWE) that shows the problem? ---
**Author:** ![pwessel](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pwessel/32/30_2.png) [@pwessel](https://forum.generic-mapping-tools.org/u/pwessel)\ **Post date:** [April 17, 2023, 12:47pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/4 "2023-04-17T12:47:09Z")
We recently fixed some bugs and missing features in grdview -T if I recall (right @Andreas?) so possibly 6.4 will have the same trouble (but master is fixed). ---
**Author:** ![Andreas](https://avatars.discourse-cdn.com/v4/letter/a/ee7513/32.png) [@Andreas](https://forum.generic-mapping-tools.org/u/Andreas)\ **Post date:** [April 17, 2023, 1:03pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/5 "2023-04-17T13:03:27Z")
Yes; - my forum post: [Gmtbinstats: cells containing points are painted NaN in grdimage](https://flint.soest.hawaii.edu/t/gmtbinstats-cells-containing-points-are-painted-nan-in-grdimage/3737) - PR: [Let grdimage share -T with grdview](https://github.com/GenericMappingTools/gmt/pull/7315) ---
**Author:** ![Kompass17](https://avatars.discourse-cdn.com/v4/letter/k/0ea827/32.png) [@Kompass17](https://forum.generic-mapping-tools.org/u/Kompass17)\ **Post date:** [April 17, 2023, 1:34pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/6 "2023-04-17T13:34:55Z")
It’s in the left diagram, the blue tiles, aiming to show a thin seam around. gmt grdcut /home/loading/tide-models/netCDF/FES2004/amp.m2 -R$mapr -G$tmp/tmp.grd gmt grdmath $tmp/tmp.grd 900 LE 0 NAN = $tmp/mask.grd gmt grdmath $tmp/mask.grd 1.0 MUL = $tmp/tmp2.grd ``` gmt psbasemap -R$r -JX4.5/4.5 -Ba0.5f0.05/a0.25f0.05WeSN -K >! $tmp/olmpp$n.ps ``` **Working result GMT4.5:** grdview $tmp/tmp2.grd -K -O -R -JX -Tso0.03,255 -Cbackdrop.cpt \>\> $tmp/olmpp$n.ps [[http://holt.oso.chalmers.se/loading/PNG/hgs-olmpp38.png](http://holt.oso.chalmers.se/loading/PNG/hgs-olmpp38.png)] **Problem result GMT6.0.0.:** [[http://barre.oso.chalmers.se/loading/PNG/hgs-olmpp38.png](http://barre.oso.chalmers.se/loading/PNG/hgs-olmpp38.png)] `gmt grdview $tmp/tmp2.grd -K -O -R -JX -T+o0.5p,255+s -Cbackdrop.cpt >> $tmp/olmpp$n.ps` ---
**Author:** ![Joaquim](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/joaquim/32/16_2.png) [@Joaquim](https://forum.generic-mapping-tools.org/u/Joaquim)\ **Post date:** [April 17, 2023, 1:56pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/7 "2023-04-17T13:56:08Z")
**This is not a reproducible example** ---
**Author:** ![Kompass17](https://avatars.discourse-cdn.com/v4/letter/k/0ea827/32.png) [@Kompass17](https://forum.generic-mapping-tools.org/u/Kompass17)\ **Post date:** [April 17, 2023, 2:27pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/8 "2023-04-17T14:27:01Z")
Okay. Here’s what you need. See [READ.ME](http://READ.ME) before you extract the rest [http://barre.oso.chalmers.se/loading/4GMT/4GMT.tar.bz2](http://barre.oso.chalmers.se/loading/4GMT/4GMT.tar.bz2) [http://barre.oso.chalmers.se/loading/4GMT/READ.ME](http://barre.oso.chalmers.se/loading/4GMT/READ.ME) ---
**Author:** ![pwessel](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pwessel/32/30_2.png) [@pwessel](https://forum.generic-mapping-tools.org/u/pwessel)\ **Post date:** [April 23, 2023, 3:06pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/9 "2023-04-23T15:06:28Z")
Maybe @Andreas could have a check since he helped us fix issues in -T as well as porting it to grdimage? ---
**Author:** ![Andreas](https://avatars.discourse-cdn.com/v4/letter/a/ee7513/32.png) [@Andreas](https://forum.generic-mapping-tools.org/u/Andreas)\ **Post date:** [April 24, 2023, 9:34am UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/10 "2023-04-24T09:34:44Z")
@Kompass17: Is the problem that you want the thin gray-ish outline of the cells? I’m not sure I can help you, but if you want me to have a look you need to - upgrade to latest gmt (6.4.0) and check the result. - create a _minimal working example_. The link to the grid you posted does not work for me. I need a script that I can copy/paste and run. ---
**Author:** ![Kompass17](https://avatars.discourse-cdn.com/v4/letter/k/0ea827/32.png) [@Kompass17](https://forum.generic-mapping-tools.org/u/Kompass17)\ **Post date:** [April 25, 2023, 8:31am UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/11 "2023-04-25T08:31:47Z")
Yes, the thin actually white grouting between the tiles is what I want. GMT6.4 is installed now, will test it any time later today. Thanks so long ---
**Author:** ![Kompass17](https://avatars.discourse-cdn.com/v4/letter/k/0ea827/32.png) [@Kompass17](https://forum.generic-mapping-tools.org/u/Kompass17)\ **Post date:** [April 25, 2023, 9:40pm UTC](https://forum.generic-mapping-tools.org/t/grdview-t/3851/12 "2023-04-25T21:40:26Z")
With v6.4 the problem is solved. Thanks for your help.