I have two files I'm trying to load into OpenDX. The first is a grid, the
second is a file comprising a lat/long coord for each row in the grid.
(These are to be plotted over a terrain model- I think the terain model is
OK, but I need to get the grid data georeferenced to plot over the
terrain)
The grid has 251 rows & 323 columns, the other file has 323 rows/coord
pairs (so each row/position from the coord file needs to be assigned to
its matching column of the grid)
What I've tried is to import the positions, stick an X & Y as a new first
line & use
ImportSpreadsheet (file of lat long positions)
|
-----------
| |
Mark Mark
|__ __|
| |
Compute a & b -> [a,b]
|
Unmark (positions)
[I think this gives me a data object comprising the 323 positions I
require]
I have also imported the gridded data & saved as a dx format binary file
which displays fine.
The script then has a Replace module to put the positions component of the
lat/long data in the positions component of the grid.
This appears to work (at least it doesn't generate any errors), & I have
print modules to check that the number of members of both incoming files
is 323.
When I pass the data through Color/Colormap/Image, I get an error from the
Image module:
ERROR: Image: Display: Bad parameter: colors are dependent on positions
but have different numbers of entries.
1. Can anyone confirm the appropriate import specs for the grid are (or
aren't), 323x251, column oriented?
2. Is this a reasonable approach in OpenDX to assigning positions to the
grid values? Am I better off using Construct (& if so, how)?
3. Any other pointers to help me get this done?
Any help appreciated.
Brent Wood
