[Vis5d-users] Re: topography

Rainer,

What happens if you try to display the topo before you put any data?

Jim


Rainer Schmitz wrote:

> Hi,
>
> I am trying to use a topography file TOPOSA.TOPO which represents most
> parts of Chile at a resolution of 30 sec. When looking at it using the
> "topoinfo" command, I get the following message:
>
> Topo file: TOPOSA.TOPO
> North bound: -18 deg
> South bound: -46 deg
> West bound: -75 deg
> East bound: -67 deg
> Rows: 3361
> Columns: 961
> min height: 0 meters
> max height: 6795 meters
> % water flags: 38
>
> To me it seems that its format is alright. However, when using it,
> displaying my data I only get a white/gray surface without any
> topography.
> Using  the v5dinfo command for my data I get the following message:
>
> File format: v5d  version: 4.3
> Compression:  1 byte per gridpoint.
> header size=11460
> sizeof(v5dstruct)=334068
>
> NumVars = 3
> Var  Name       Units      Rows  Cols  Levels LowLev  MinVal
> MaxVal
>   1  no                     83    62    37      0     1.40594e-16
> 0.00611699
>   2  o3                     83    62    37      0     1e-16
> 2.12291
>   3  co                     83    62    37      0     1.01636e-16
> 9.71855
>
> NumTimes = 5
> Step    Date(YYDDD)    Time(HH:MM:SS)   Day
>   1        97001           0:00:00     Wednesday
>   2        97002           0:00:00     Thursday
>   3        97003           0:00:00     Friday
>   4        97004           0:00:00     Saturday
>   5        97005           0:00:00     Sunday
>
> Unequally spaced levels in km:
> Level   Height(km)
>   1          0.086
>   2          0.268
>   3          0.455
>   4          0.647
>   5          0.845
>   6          1.047
>   7          1.256
>   8          1.471
>   9          1.693
>  10          1.921
>  11          2.157
>  12          2.401
>  13          2.654
>  14          2.916
>  15          3.187
>  16          3.470
>  17          3.763
>  18          4.070
>  19          4.390
>  20          4.725
>  21          5.076
>  22          5.445
>  23          5.834
>  24          6.246
>  25          6.682
>  26          7.147
>  27          7.643
>  28          8.177
>  29          8.753
>  30          9.379
>  31         10.065
>  32         10.823
>  33         11.671
>  34         12.631
>  35         13.740
>  36         15.052
>  37         16.657
>
> Cylindrical Equidistant projection:
>         North Boundary: -32.871208 degrees
>         West Boundary: -71.311600 degrees
>         Row Increment: 0.014900 degrees
>         Column Increment: 0.018000 degrees
>
> Any idea why I can't display my topography?
>
> Thanks,
>
> Rainer
>
> --
> Rainer Schmitz
> Department of Geophysics
> University of Chile
> phone # (56)(2)678 4592
> fax   # (56)(2)696 8686