[las_users] problem in curvilinear data

[turuncu@xxxxxxxxxxxxx]

Hi,

i follow the adding curvilinear data instructions a form the LAS web site.
I add dataset but when i plot it, i get following error,

*** NOTE: Units on axis "level" are not recognized: Pa
 *** NOTE: They will not be convertible:
 **ERROR: command syntax: ABS(  - 32.687 )
          ( before - is illegal
          negative constants need to be enclosed in parentheses
DEFINE VARIABLE ylodiff =  ABS(  - 32.687 )
Command file, command group, or REPEAT execution aborted
STOP -script mode, ERROR RUNNING SCRIPT statement executed

i define the parameters in my data set xml file. My xml file as follows,

<datasets>
 <trccs_cdf name="Demo Curvilinear data"
             url="file:mmout_tmp_d3-2001-2010"
             doc="">

  <!-- Default properties for this dataset -->
  <properties>
   <ferret>
    <curvi_coord_lon>lon</curvi_coord_lon> <!-- curv. coords -->
    <curvi_coord_lat>lat</curvi_coord_lat>  <!-- curv. coords -->
   </ferret>
  </properties>
  <variables>
   <t2ave name="2m average temperature" units="K">
    <link match="/lasdata/grids/trccs_cdf_X_Y_MT_grid"/>
   </t2ave>
  </variables>
 </trccs_cdf>
</datasets>
<grids>
 <trccs_cdf_X_Y_MT_grid>
  <link match="/lasdata/axes/trccs_cdf_X"/>
  <link match="/lasdata/axes/trccs_cdf_Y"/>
  <link match="/lasdata/axes/trccs_cdf_MT"/>
 </trccs_cdf_X_Y_MT_grid>
</grids>
<!-- The X and Y ranges here are the ranges for the curvilinear
     coordinates, not the coordinate axes of the variables -->
<axes>
 <trccs_cdf_X type="x" units="degrees_east">
  <arange start="24.316" step="0.1131" size="201"/>
 </trccs_cdf_X>
 <trccs_cdf_Y type="y" units="degrees_north">
  <arange start="32.687" step="0.09772" size="114"/>
 </trccs_cdf_Y>
 <trccs_cdf_MT type="t" units="month">
  <arange start="2001-08-01" step="1" size="113"/>
 </trccs_cdf_MT>
</axes>

any suggestion will be helpful for me.

best regards

--ufuk