IDL is an acronym for Interactive Data Language.

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Suppress values from multiband rasters

I have a raster stack with 84 bands . It is a time series raster. It so appears that the cloud is causing error in my processing and hence i need to suppress or replace them by a NaN to eliminate them ...
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54 views

IDL 7.1.2; How to plot negative correlation in Taylor diagram [closed]

I am working on a model's run performance evaluation, three runs of GFDL-CM2.0 and five runs of GFDL-CM2.1 are used for temperature and precipitation for the years 1979-2000. The objective is to ...
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68 views

Georeferencing using corner coordinate

I have thousands of tiff files with meta file containing corner coordinates. All images coordinates are different as they represent different locations. How can I georeference all these files using ...
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45 views

.tif image file cropping

following image has black portion on all side which value is [-inf], that what was showing in ENVI. How can I crop this black portion using that [-inf] value?
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33 views

How to write a UNIX ANSI text file under windows by IDL

I want to use openw in IDL to write a UNIX ANSI text file under windows. But the result are always in the format of PC UTF-8. Does some one know how to solve this issue? Thanks!
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1answer
91 views

opening a georefrenced image in IDL in ENVI

I am working with idl in envi,I want to use ENVI_CONVERT_FILE_COORDINATES in case of finding pixel value of specified point,for this porpuse I have lat and long data of my point but I need to open ...
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1answer
112 views

Pixel Value in a Lat and Long location in Envi IDL

I am new with ENVI IDL,I want to get pixel value of each band in an image in specified lat and long location.I can do a loop among bands in image using this code ...
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83 views

Any solution to mosaic Modis MOD13Q1 using batch file?

I have a Modis MOD13Q1 product for Pakistan, four tiles cover my complete area and I have data consisting of 14 years, after every 16-day interval. I want to mosaic them using a batch file which ...
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1answer
28 views

Python version of MAP_2POINTS

I think I may have stumbled onto an IDL function which does not have a python equivalent... :'( I am working with a Whiskbroom imaging radiometer (Terra/Aqua MODIS), with a corresponding bounding box ...
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1answer
115 views

ICESat/GLAS coordinate system conversion

I have to import ICESat GLAS14 product data into ArcGIS. I managed to export into an ASCII file the binary GLAS data using NGAT tool, but the coordinates system are in an uncommon format ...
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1answer
91 views

How to read ASTER metadata in IDL?

I'm trying to read many ASTER images (1B mainly) in IDL (I can try in R also). I'm used to work with Landsat, but the aster metadata is complicated. I write a code with a lots of conditional that can ...
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81 views

Call MRT Swath from IDL

Do you know how to call MRT Swath from IDL? I would like to work with Modis L1B (MOD02HKM), read it, reproject, some processing and writing the results. Any help highly appreciated.
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2k views

Recommended programming language for remote sensing?

I am beginning studies that hopefully will lead to a long career as a remote sensing specialist. I am currently working with ArcGIS for some applications and learning ENVI for others. I have ...
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1answer
125 views

Find the vertices of an ROI in XROI using IDL

I need to find the vertices of an ROI shape created in IDL's XROI, so that I can redraw the ROI on multiple images. I know you can find the centroid, area and perimeter with the GEOMETRY command, but ...
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2answers
321 views

MODIS Level 1B batch process

I am a new MODIS Level 1B user. I have been using the MODIS Swath tool to process my images. However, I have over 1000 images to process. I was wondering if there a script available in IDL or R (very ...
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229 views

Phenological event extraction in IDL

I’m doing phenological study using a threshold method in IDL. I have a twelve-band image in 2005 (format is in .tiff not ENVI format). Twelve-band means that monthly images (Jan to Dec) have been ...