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Hi Greg- > Thanks Don I will experiment with it. If you have any questions, let me know. > By the way other than occasional hardware (graphics card?) issues --- gray > screen at times, corrupted main display --- transect with Level II data > (individual sweeps) seems to work fine. You are right windows and Open GL > don't get along real well. Thanks for letting me know. I'll keep it in there - good suggestion. I run into problems on my system when I open multiple displays. But everyone's mileage varies on this it seems. Don > Greg ... > > -----Original Message----- > From: Unidata IDV Support [mailto:address@hidden] > Sent: Thursday, September 21, 2006 10:38 AM > To: Salottolo Greg > Cc: address@hidden > Subject: [IDV #HJT-379438]: Displaying Level III McIDAS Area Files > > > Hi Greg- > > Jeff's answer is correct. The basic problem is that when reading > from disk, we have no way of calibrating the image. The ADDE server > does the calibration when we read from the remote systems (and we > calibrate when reading the raw Level III data). The only > solutions would be to: > > - put the files on a local ADDE server and let the server calibrate > > or > > - when you grab the images through McIDAS IMGCOPY, use the UNIT= keyword > to get a pre-calibrated image. The UNIT's for Level III are: > > ECHO - Reflectivity > VIP - Vip level > TOPS - Echo Tops > RAIN - Precip > H2O - VIL > VEL - Radial Velocity > > Here's the imgcopy command I used: > > IMGCOPY RTNEXRAD/N0R MYDATA/IMAGES.2001 UNIT=ECHO ID=FTG > > When you display it in the IDV, you'll need to still set the range > if you use the image display. > > Don Murray > > > > > > > I would like to display a Level III McIDAS Area file in IDV. It loads OK > > > but the display is black. Any thoughts? > > > > > > > There is actually data there but the range of the data is ~0-6 > > and that is only in a small part of the image. The rest is 0. > > With the default color table range of 0-255 you are getting mostly > > black (using the gray scale color table). > > > > Try changing the Color range - right click on the color bar > > and select "Change Range" > > > > You can also add a data probe or a data transect on this image to > > see the actual values. > > > > > > Don is out for a few days but I'll ask him to look at this file > > to see if there is anything wrong about the data or our reading > > of the data. > > > > -Jeff > > > > > Ticket Details > =================== > Ticket ID: HJT-379438 > Department: Support IDV > Priority: Normal > Status: Open > > > Ticket Details =================== Ticket ID: HJT-379438 Department: Support IDV Priority: Normal Status: Open