Re: [ferret_users] Ferret - problems with Fprint (gksm2ps)

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Paul,
Ferret is not set up to process the words -inf and inf for levels in a 
palette file. Interesting that it works at all. It's a good idea to make 
it do so, and I've put it on our list of future improvements. You get a 
prize for that, and also the pretty-palette-of-the-week award.

Ansley



Paul Young wrote:
> Hi all,
>
> Whilst we're on the subject of gksm2ps , I've recently had a problem
> with converting *.plt to *.ps.... 
> I have made my own colour palette to match the NASA lidar ozone plots
> (see http://asd-www.larc.nasa.gov/lidar/data/tra13no1.gif for example).
> I have included the contents of the colour bar (By_values) file below.
>
> The problem is that the postscript file generated from Fprint/gksm2ps
> contains 'NaN's, which I think are due to me specifying colour levels
> for '-inf' and 'inf'. The problem can be resolved by using sed to edit
> the postscript file (something like $ sed 's/NaN/1.0/g' in.ps > out.ps)
> and the plot looks fine. But, is this a bug in gksm2ps? If so, do I win
> a prize for spotting it!?
>
> Thanks for any comments,
>
> Paul
>
> p.s. Here's my palette file
>
> RGB_Mapping_By_value
> !SetPt Red     Green    Blue
> -inf   100     100      100
> 0      100      54.902  100
> 4       86.667  43.529  100
> 8       73.333  32.157  100
> 12      60      21.176  100
> 16      46.667   9.804  100
> 20      69.804 100      100
> 24      52.157  80      100
> 28      34.902  60      100
> 32      17.255  40      100
> 36       0      20      100
> 40      74.902 100       74.902
> 44      56.078 100       56.078
> 48      37.255 100       37.255
> 52      18.431 100       18.431
> 56       0     100        0
> 60     100     100        0
> 64     100      81.176    0
> 68     100      62.353    0
> 72     100      43.529    0
> 76     100      24.706    0
> 80     100       0        0
> 84      84.706   0        5.882
> 88      69.804   0       12.157
> 92      54.902   0       18.431
> 96      40       0       24.706
> 100      0       0        0
> inf      0       0        0
>
>
>
>   
--

~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~> 
Ansley Manke, NOAA/PMEL   ansley.b.manke@noaa.gov
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744