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2 Replies and 1109 Views
Problem with MCTK extracting MODIS LST (MOD11A1) 1109 2
Started by Deleted User
Hi
I ran the code according to MCTK manual for MOD11A1 file, but it displays the error as "attempt to subscript NUM_DIMS_ARRAY with VALID_SDS is out of range ".
The Code is:
pro test_batch_modis_conversion_grid
compile_opt idl2
modis_grid_file = 'C:\MOD11A1.A2008336.h25v06.005.2008337232328.hdf'
output_location = 'C:\output\'
output_rootname = 'lst_day'
grid_name = 'MODIS_Grid_Daily_1km_LST'
sd_names = &91'LST_day_1km'&93
out_method = 1...
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2 |
1109 |
01 Aug 2012 10:59 PM |
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1 Replies and 1260 Views
read_ascii problem 1260 1
Started by Deleted User
Hello,
I use IDL8.0. Let's say I have
a=read_ascii(filename)
My filename doesn't matter, it's just an ascii file.
I get an error:
RA_READ_FROM_TEMPL: Unexpected Error: Keyword TNAME not allowed in call to: DATATYPE.
Has anyone seen this error before
Thanks in advance for your help,
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1 |
1260 |
01 Aug 2012 02:08 PM |
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3 Replies and 2056 Views
Conversion Error Message While Subsetting Image 2056 3
Started by Deleted User
Below is the code that we have written to pull the data from the Geo-referenced (lat/long based) subset of a full size image using an EVF. It is running, but returning the error message "Type conversion error: Unable to convert given STRING to Float. Detected at: ENVI_DATA_TYPE_WRITE". I'm not sure what I'm doing wrong here - any suggestions
PRO DrCrkRsz
COMPILE_OPT strictarr
;Restore all the base save files
ENVI, /restore_base_save_files
;Initialize ENVI and send a...
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3 |
2056 |
30 Jul 2012 12:30 PM |
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2 Replies and 1073 Views
Python 3x faster at restoring .sav with large arrays 1073 2
Started by Deleted User
I have recently come across a bottleneck with my application where the RESTORE procedure takes 6-7 seconds to restore 6 large arrays.
The arrays are each &914049, 2189&93 four of them are integers the other two are float.
My question to the IDL devs is why does this restore take so long I have tested the same restore with the readsav function from Pythons scipy library and the Python library was 3x faster. How is it that Python is faster at reading IDL's own file type Is there any plan...
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2 |
1073 |
29 Jul 2012 08:03 PM |
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1 Replies and 1375 Views
IDL/ENVI Extract ROI in Batch Mode 1375 1
Started by Deleted User
In a previous post I asked about resizing Landsat images in batch mode. Thanks for all your help, I realized that I was perhaps taking the wrong approach. Mostly since the landsat images are not co-registered, so the DIMS keyword doesn't work.
Manually in Envi, this is what I do (and would like to get it into batch mode).
Open the image, use Basic Tools: Resize data (spatial/spectra): Select Spatial subset using map: enter lat-log of box corners
The other way I have done it is:
Open the im...
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1 |
1375 |
27 Jul 2012 10:21 AM |
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1 Replies and 1562 Views
Fastest way to find value in sorted list? 1562 1
Started by Deleted User
Hi Guys,
I'm wondering if someone can help me speed up my code. I'm basically looping through a large array and comparing values with two other large sorted arrays trying to find the value thats equal to or less than that value. I'm currently using a where procedure but I'm sure there has to be a faster way to search as I'm not looking for multiple values as the where finds, I'm just after one value. Anyway here is an example of my code:
For k = 0L, numDataElements-1 do b...
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1 |
1562 |
27 Jul 2012 01:12 AM |
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5 Replies and 1961 Views
Resizing Images in Batch Mode 1961 5
Started by Deleted User
I am a student, just getting started with IDL programming, and I am hoping to process a large amount of LANDSAT images with ENVI in a batch mode. By nature of LANDSAT files, they are very large, and take a long time to run through my program which retrieves statistics from the image. I am hoping to resize the image automatically , but am not sure/have been unable to find a command that allows me to do this.
Any suggestions
I am also having difficulties extracting the data to a .csv file. A...
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5 |
1961 |
25 Jul 2012 11:25 AM |
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1 Replies and 1242 Views
Is this a legitimate way of projection and subset 1242 1
Started by Deleted User
Hi all,
I need to subset a lot of images using another image (Let's just call it the reference image). I would like these images to have the same projection, extent, and exactly-matched pixels. The images to be subset have the same spatial resolution with the reference image. Here's my way of doing it. Please let me know if you think it's legitimate.
1. Get the file coordinates of the reference image, convert it to map coordinates, and then to lat/lon.
2. For each image to be subset, conve...
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1 |
1242 |
24 Jul 2012 06:01 PM |
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6 Replies and 1789 Views
Multispectral band error RasterToFID: Raster must be a single ENVIRaster 1789 6
Started by Deleted User
While executing:
file = {multispectral landsat metadata file *MTL.txt}
raster = envi.OpenRaster(file)
fid= ENVIRasterToFID(raster)
ENVI_DOIT, 'TMCAL_DOIT', FID=fid, /USE_METADATA
Gives error:
Invalid pointer: )>." The result may be invalid.
and while compiling says:
ENVIRASTERTOFID: Raster must be a single ENVIRaster.
Actually Landsat calibration is fine but it stops my script!
How to fix
Full code is here:
PRO ...
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6 |
1789 |
24 Jul 2012 04:55 AM |
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2 Replies and 1319 Views
IDL 8.0 Reference Guide 1319 2
Started by Deleted User
Hello,
I am an IDL beginner and I have been referred to the IDL Reference Guide (I'm following Bowman's Intro to Programming and he refers to it a lot). I have been able to find the .pdf Reference Guide for older versions of IDL (5.4) but nothing for more recent versions. I've read online that IDL 8.0 didn't include all the old help documentation when it first came out, but this is all from 2010.
Does anyone know if a Reference Guide exists for 8.0, and if so where I could download it If not...
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2 |
1319 |
23 Jul 2012 03:01 PM |
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1 Replies and 1536 Views
Max Per Pixel of a Layerstack or aet of images? 1536 1
Started by Deleted User
Hi,
Im trying to write an IDL code that goes through either a set of images or a layerstack pixel by pixel and looks for the maximum value and records that to a new file. I understand how to use basic IDL code like for loops and work with arrays but im still very new to IDL. Just to reiterate and try to make clear i have 27 input images and want to find the maximum value per pixel of whole set and creata a maximum image.
Thanks for the help.
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1 |
1536 |
23 Jul 2012 12:43 PM |
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2 Replies and 1478 Views
DLM WITH VS2008 1478 2
Started by Deleted User
HELLO,EVERYONE ! I met this problem really annoys me! Hoping some good guy can help me! I followed the EXAMPLE ON book 'calling c from IDL', I test it on vc6.0,then it worked! but when I try to do it the same way on vs2008 ,then it always give the message as follows:
IDL> simpleProcedure
SIMPLEPROCEDURE: Error loading sharable executable.
Symbol: IDL_Load, File = D:\Program Files\ITT\IDL71\bin\bin.x86\simpleExample.dll
Õ»µ½¶¨µÌÐò¡£
Execution halted at: $MAIN$
Can anybody...
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2 |
1478 |
21 Jul 2012 05:05 AM |
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0 Replies and 1270 Views
DLM WITH VISUALSTUDIO 2008 1270 0
Started by Deleted User
i followed the example on the book "calling c from IDL" .I test it on the vc6.0 then it succeed! But when I try to use the same way on platform vs2008 ,then it didn't work! It always give the error tips as follows:
IDL> simpleProcedure
SIMPLEPROCEDURE: Error loading sharable executable.
Symbol: IDL_Load, File = D:\Program Files\ITT\IDL71\bin\bin.x86\simpleExample.dll
Õ»µ½¶¨µÌÐ&og...
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0 |
1270 |
21 Jul 2012 04:54 AM |
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1 Replies and 1349 Views
trying to read .ptw files 1349 1
Started by Deleted User
I have some data in .ptw files which I want to read in using IDL. Does anyone know of an IDL function which will do that I cannot find a definition of that format.
Thanks.
Robert Fusina
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1 |
1349 |
19 Jul 2012 09:44 AM |
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0 Replies and 1481 Views
hash, Unable to allocate memory? 1481 0
Started by Deleted User
Hi guys:
I have the fellowing code with IDL 8.2 in 32bit windows 7.
IDL> dstruct = {data:fltarr(&91161, 111, 1, 1, 41, 51&93)}
IDL> help,dstruct.data
FLOAT = Array&91161, 111, 1, 1, 41, 51&93
Above code is ok. But when I use hash,
IDL> d=hash()
IDL> d&91'dstruct'&93 = temporary(dstruct)
IDL> help,d&91'dstruct'&93.data
Unable to allocate memory: to make array.
Not enough space
Execution halted at: $MAIN$
As you see, I use temporary, which not...
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0 |
1481 |
17 Jul 2012 10:05 PM |
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3 Replies and 1352 Views
about vector scale 1352 3
Started by Deleted User
Hi guys:
I use vector function to plot wind. The wind magnitude is between 0 and 32m/s. So the large wind speed vector has long length arrow, but smaller wind spedd vector just show arrow head. How do I reduce this length scale difference.
dave
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3 |
1352 |
17 Jul 2012 08:03 PM |
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0 Replies and 1285 Views
about vector scale 1285 0
Started by Deleted User
Hi guys:
I use vector function to plot wind. The wind magnitude is between 0 and 32m/s. So the large wind speed vector has long length arrow, but smaller wind spedd vector just show arrow head. How do I reduce this length scale difference.
dave
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0 |
1285 |
17 Jul 2012 08:03 PM |
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2 Replies and 1276 Views
POLYLINE: Unable to concatenate variables 1276 2
Started by Deleted User
Hi guys:
I have the fellowing code with IDL 8.2 windows, but get error
x = &9190.44,91.00,92.00,93.00,94.00,94.51,95.00,96.00,97.00,98.00,99.00,100.00,100.89,101.00,101.80,150.00,149.00,148.47,$
148.00,147.00,146.47,147.00,147.54,148.00,148.04,149.00,149.37,150.00,85.00,84.23,84.00,83.96,84.00,85.00,85.23,$
85.40&93
y=&9155.00,54.19,54.22,54.49,54.07,54.00,53.88,53.32,53.40,53.37,53.32,53.60,54.00,54.05,55.00,53.68,53.79,54.00,$
54.29,54.34,54.00,53.59,53.00,52.06,52.00,51.34,51...
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2 |
1276 |
17 Jul 2012 01:45 AM |
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0 Replies and 1356 Views
What's Wrong I am doing Using FORMAT 1356 0
Started by Deleted User
Hi All!
I am going out of head reading a formatted text file, it should not be a problem, but I am having strange issues:
this is the file test ( I add a ruler ) I need to read the underlined value:
AAA 2921.5 0.0000000.296018145670195E08..............................
--------0--------0--------0--------0--------0--------0......
AND THIS IS THE CODE
a=0.00000000000000000000000E00
e=0.00000000000000000000000E00
i=0.00000000000000000000000E00
omega=0E00
frase=''
...
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0 |
1356 |
16 Jul 2012 11:30 AM |
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2 Replies and 1307 Views
Blank of vector plot over Stereographic map projection! 1307 2
Started by Deleted User
Hi guys,
I run the fellowing code with windows IDL 8.2:
; Read the data.
RESTORE, FILEPATH('globalwinds.dat', SUBDIR=&91'examples','data'&93)
mp_bg = MAP('Stereographic', $
CENTER_LONGITUDE=110, $
CENTER_LATITUDE=90)
vec = vector(u, v, x, y, /overplot, GRID_UNITS=2)
But there is a blank area between 60W to 180W. So why
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2 |
1307 |
15 Jul 2012 08:48 AM |
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