Hi,
So it looks as if this data is defined in coordinates of meters?
Ferret does not have built-in tools to handle this kind of
coordinate system, but simply for the problem of inverting an x
axis, you could read the data into Ferret, as you have done, and
then save it to a netCDF file. Then,
use/order=-xy myfile.nc
and the order of the x coordinates will be reversed.
Ansley
On 10/18/2011 9:16 PM, 金懐東（Jimmy Kin） wrote:
Dear Ansley
Here is the interpretation of my file. And I also attached the
test.gif that was drawn from the temperature.dat file.
Grid "MOD_Grid_Seaice_1km" contains the following projection
information:
Projecttion type: Lambert Azimuthal Equal Area
Projection parameters:
1 6371228.000000
2 0.000000
3 0.000000
4 0.000000
5 0.000000
6 90000000.000000
7 0.000000
8 0.000000
9 0.000000
10 0.000000
11 0.000000
12 0.000000
13 0.000000
14 0.000000
Upper left coordinates: 476784.325500,-1430352.976500
Lower right coordinates: 1430352.976500,-2383921.627500
Coordinate origin: Upper Left
uint16 GRID_MOD_Grid_Seaice_1km_Ice_Surface_Temperature.dat
(YDim=951,XDim=951)
Data type: unsigned 16-bit integer
Number of Dimensions: 2
Dim 1: "YDim" = 951
Dim 2: "XDim" = 951
And below is the code:
yes? define axis/x=1:951:1 ax
yes? define axis/y=1:951:1 ay
yes? define grid/x=ax/y=ay gxy
yes? set
data/ez/formate=stream/var=temperature/grid=gxy/col=904401/type=i2
GRID_MOD_Grid_Seaice_1km_Ice_Surface_Temperature.dat
yes? fill/hlimits=1:951:-1 temperature
yes? frame/file=test.gif
Thank you.
2011/10/19 Ansley Manke <Ansley.B.Manke@xxxxxxxx>
Hi Jimmy,
Is the data in a netCDF file? If so then you can open the
file with the /ORDER qualifier and request that an axis be
reversed.
yes? use/ORDER=-xyzt myfile.nc
listing the correct set of axes are for your dataset.
I don't think I understand what you are seeing with the tic
marks. Can you attach an image, and also show the commands
that you tried?
Ansley
On 10/17/2011 7:09 PM, 金懐東（Jimmy Kin） wrote:
Dear all,
how to inverse x axis in ferret v6.72 by unix.
I also have tried the
fill/hlimits=lo_val:hi_val[:increment], anyway the x
axis was definitely inversed. But the problem is
that the x axis' tic marks changed to be a bold
line.
So how can I inverse the x axis with the correct
tic marks?
Thank you very much!
sincerely.
--
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金懐東
（Jimmy Kin)
Yamaguchi
Research Laboratory Master Course
Department of Ocean Technology, Policy and
Environment
Graduate School of Frontier Sciences
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--
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
金懐東
（Jimmy Kin)
Yamaguchi
Research Laboratory Master Course
Department of Ocean Technology, Policy and Environment
Graduate School of Frontier Sciences
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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