Do you get an error selecting the .TIL to open in ENVI? What version of ENVI do you run? ENVI should automatically extract all the metadata necessary to perform radiometric correction if you open using the .TIL. Then you would use Radiometric Calibration to convert the data to Radiance using 'FLAASH Settings' prior to input to FLAASH.

The zenith and azimuth angles can sometimes be difficult to interpret how to enter. The documentation describes the acceptable range of values but the values have to be reasonable for the time of day also:
http://www.harrisgeospati...Options.html#Select3

I run a 5.4 trial version of ENVI.

Actually with "Open External File > WorldView > Mosaic Tiled WV Product" I can open the .TIL. After that, I suppose I have to convert the file into BIL or BIP to use it in FLAASH, right ?

Do I need to do something else before using FLAASH ?

You will need to use Radiometric Correction with 'FLAASH Settings'. This will convert the data to the expected units for FLAASH as well as the correct interleave. When you import this result to FLAASH, you can use a Scale Factor of 1.0 for all bands.

OK, I will try that ! I let you know if it worked.

Thanks

I tried and I have this error message:

---------------------------
ENVI Error
---------------------------
Problem: The FLAASH program exited with the following errors:

ACC error: convert7
IDL error:
End of input record encountered on file unit: 0.

ACC_CONVERT7 <( 9)>
ACC_HYPER2 <( 784)>
ACC_ACC <( 191)>
ENVI_ACC_EVENT <(3184)>
ENVI_FLAASH_PROCESS_MANAGER <( 274)>
IDLRTMAIN <( 172)>
$MAIN$ <( 0)>
---------------------------

Can you post your template.txt that is produced in the output directory specified in the FLAASH dialog?

;
;ENVI FLAASH PARAMETERS TEMPLATE (5.4.1)
;Written Wed Jan 10 10:32:06 2018
;
; Project Parameters
enviacc.prj.radiance_file = G:\LL_WORKSPACE\OTR-SI381_GoldSpot_Peru\02_Rasters\1_Image_de_base\Essai_FLAASH\SWIR_057064006030_01_P002_SWR_BIL
enviacc.prj.reflect_file = C:\Users\lleg\AppData\Local\Temp\
enviacc.prj.filter_func_file_index = 0
enviacc.prj.water_band_choice = 1.13
enviacc.prj.red_channel = 0
enviacc.prj.green_channel = 0
enviacc.prj.blue_channel = 0
enviacc.prj.water_abs_channel = 0
enviacc.prj.water_ref_channel = 0
enviacc.prj.kt_upper_channel = 0
enviacc.prj.kt_lower_channel = 0
enviacc.prj.kt_cutoff = 0.0800
enviacc.prj.kt_ratio = 0.5000
enviacc.prj.cirrus_channel = 0
enviacc.prj.water_retrieval = 0
enviacc.prj.modtran_directory = C:\Users\lleg\AppData\Local\Temp\
;
; MODTRAN Parameters
enviacc.modtran.visvalue = 40.0000
enviacc.modtran.f_resolution = 5.0000
enviacc.modtran.day = 1
enviacc.modtran.month = 1
enviacc.modtran.year = 2000
enviacc.modtran.gmt = 0.0000
enviacc.modtran.latitude = -14.9895
enviacc.modtran.longitude = -72.3389
enviacc.modtran.sensor_altitude = 0.0000
enviacc.modtran.ground_elevation = 0.0000
enviacc.modtran.view_zenith_angle = 8.2000
enviacc.modtran.view_azimuth = 103.0000
enviacc.modtran.atmosphere_model = 1
enviacc.modtran.aerosol_model = 1
enviacc.modtran.multiscatter_model = 2
enviacc.modtran.disort_streams = 8
enviacc.modtran.co2mix = 390.0000
enviacc.modtran.water_column_multiplier = 1.0000
;
; Image Parameters
enviacc.img.nspatial = 1317
enviacc.img.nlines = 2055
enviacc.img.data_type = 12
enviacc.img.margin1 = 0
enviacc.img.margin2 = 0
enviacc.img.nskip = 0
enviacc.img.pixel_size = 7.5000
enviacc.img.sensor_name = UNKNOWN-MSI
;
; Analysis Parameters
enviacc.ana.aerosol_scaleht = 1.5000
enviacc.ana.use_adjacency = 1
enviacc.ana.output_scale = 10000.0000
enviacc.ana.output_diagnostic_files = 0
enviacc.ana.auto_save_template = 1
enviacc.ana.polishing_res = 9
enviacc.ana.aerosol_retrieval = 1
enviacc.ana.calc_wl_correction = 0
enviacc.ana.reuse_modtran_calcs = 0
enviacc.ana.use_square_slit_function = 0
enviacc.ana.convolution_method = fft
enviacc.ana.use_tiling = 1
enviacc.ana.tile_size = 100.0000
;
; GParameters Parameters
enviacc.gparameters.gfact = 0
enviacc.gparameters.gval = 0.0000
enviacc.gparameters.use_lr_method = 0
enviacc.gparameters.multikernel = 1
enviacc.gparameters.autoroi = auto
enviacc.gparameters.selarg = a
;
; Spectral Parameters
enviacc.spc.wavelength_units = nanometer
enviacc.spc.lambda = [
1209.1000, 1571.6000, 1661.1000, 1729.5000, 2163.7000, 2202.2000, 2259.3000,
2329.2000]
enviacc.spc.fwhm = [
-1.000000, -1.000000, -1.000000, -1.000000, -1.000000, -1.000000, -1.000000,
-1.000000]
enviacc.img.p_input_scale = [
1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000,
1.0000]

Eveytime I run FLAASH (with ASTER or WV-3 images) I have the same error message.

Here's the template.txt:

;
;ENVI FLAASH PARAMETERS TEMPLATE (5.4.1)
;Written Fri Jan 12 12:29:24 2018
;
; Project Parameters
enviacc.prj.radiance_file = G:\LL_WORKSPACE\OTR-SI411_GoldSpot_Arizona\02_Rasters\01_Images_base\ASTER\HDF\FLAASH\AST_L1T_00309122003181427_20150430202806_8211_RadCorr.dat
enviacc.prj.reflect_file = G:\LL_WORKSPACE\OTR-SI411_GoldSpot_Arizona\02_Rasters\01_Images_base\ASTER\HDF\FLAASH\AST_L1T_00309122003181427_20150430202806_8211_fin
enviacc.prj.filter_func_file = G:\ENVI_5.4.1_Trial\ENVI54\classic\filt_func\aster.sli
enviacc.prj.filter_func_file_index = 0
enviacc.prj.water_band_choice = 1.13
enviacc.prj.red_channel = 2
enviacc.prj.green_channel = 1
enviacc.prj.blue_channel = 0
enviacc.prj.water_abs_channel = 0
enviacc.prj.water_ref_channel = 0
enviacc.prj.kt_upper_channel = 5
enviacc.prj.kt_lower_channel = 2
enviacc.prj.kt_cutoff = 0.0800
enviacc.prj.kt_ratio = 0.5000
enviacc.prj.cirrus_channel = 0
enviacc.prj.water_retrieval = 0
enviacc.prj.modtran_directory = C:\Users\lleg\AppData\Local\Temp\
;
; MODTRAN Parameters
enviacc.modtran.visvalue = 40.0000
enviacc.modtran.f_resolution = 15.0000
enviacc.modtran.day = 12
enviacc.modtran.month = 9
enviacc.modtran.year = 2003
enviacc.modtran.gmt = 18.2406
enviacc.modtran.latitude = 33.6121
enviacc.modtran.longitude = -110.7300
enviacc.modtran.sensor_altitude = 705.0000
enviacc.modtran.ground_elevation = 1.5000
enviacc.modtran.view_zenith_angle = 180.0000
enviacc.modtran.view_azimuth = 0.0000
enviacc.modtran.atmosphere_model = 2
enviacc.modtran.aerosol_model = 1
enviacc.modtran.multiscatter_model = 2
enviacc.modtran.disort_streams = 8
enviacc.modtran.co2mix = 390.0000
enviacc.modtran.water_column_multiplier = 1.0000
;
; Image Parameters
enviacc.img.nspatial = 5634
enviacc.img.nlines = 4998
enviacc.img.data_type = 4
enviacc.img.margin1 = 0
enviacc.img.margin2 = 0
enviacc.img.nskip = 0
enviacc.img.pixel_size = 15.0000
enviacc.img.sensor_name = ASTER
;
; Analysis Parameters
enviacc.ana.aerosol_scaleht = 1.5000
enviacc.ana.use_adjacency = 1
enviacc.ana.output_scale = 10000.0000
enviacc.ana.output_diagnostic_files = 0
enviacc.ana.auto_save_template = 1
enviacc.ana.polishing_res = 0
enviacc.ana.aerosol_retrieval = 1
enviacc.ana.calc_wl_correction = 0
enviacc.ana.reuse_modtran_calcs = 0
enviacc.ana.use_square_slit_function = 0
enviacc.ana.convolution_method = fft
enviacc.ana.use_tiling = 1
enviacc.ana.tile_size = 100.0000
;
; GParameters Parameters
enviacc.gparameters.gfact = 0
enviacc.gparameters.gval = 0.0000
enviacc.gparameters.use_lr_method = 0
enviacc.gparameters.multikernel = 1
enviacc.gparameters.autoroi = auto
enviacc.gparameters.selarg = a
;
; Spectral Parameters
enviacc.spc.wavelength_units = micron
enviacc.spc.lambda = [
0.5560, 0.6610, 0.8070, 1.6560, 2.1670, 2.2090, 2.2620,
2.3360, 2.4000, 8.2910, 8.6340, 9.0750, 10.6570, 11.3180]
enviacc.spc.fwhm = [
0.080000, 0.060000, 0.100000, 0.100000, 0.040000, 0.040000, 0.050000,
0.070000, 0.070000, 0.350000, 0.350000, 0.350000, 0.700000, 0.700000]
enviacc.img.p_input_scale = [
1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000,
1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000]

In your first template, you have these values:
enviacc.modtran.ground_elevation = 0.0000
enviacc.modtran.view_zenith_angle = 8.2000

The zenith must be a value between 90-180 degrees with 180 as nadir.

With the second template, the wavelengths look weird:
0.5560, 0.6610, 0.8070, 1.6560, 2.1670, 2.2090, 2.2620,
2.3360, 2.4000, 8.2910, 8.6340, 9.0750, 10.6570, 11.3180

Worldview-3 data does not go up to the TIR wavelengths. FLAASH can only correct data from 400-2400nm (.0.4.-2.4um). ENVI should read the wavelengths automatically so I don't know why they may have been changed.

I finally succedeed to run FLAASH.

(The second template concern an ASTER image)

But I have strange wavelength for WorldView-3 SWIR:
B1: 0.425
B2: 0.48
B3: 0.545
B4: 0.605
B5: 0.66
B6: 0.725
B7: 0.8325
B8: 0.95

The bands should be between 1.1209 and 2.3292.

That makes sense for ASTER. Just process the Thermal bands with the Thermal Atmospheric correction tool. You can process the VNIR-SWIR bands (stacked) in FLAASH.
The wavelengths above are definitely for the VNIR WV-3 bands. How does the data look? I wonder if the TIL or something was mixed up?

When I open the .TIL file provided by Digital Globe in ENVI I get 8 bands with the same wavelength as my previous message. BUT it is supposed to be SWIR data. Do you think that ENVI misread the data and interpret my data as VNIR instead of SWIR ?

I got two folders from Digital Globe. One MUL and the other SWR.

I have data from DG with both MS and SWIR data and they open with the correct wavelengths in ENVI 5.4.1 for me. What does the .IMD file in the directory show for band ID and names? For SWIR, it should show

bandId = "All-S"

and then:
BAND_S1
BAND_S2...etc

This is the first part of the .IMD file for the SWIR data:


version = "28.3";
generationTime = 2017-10-23T17:24:48.000000Z;
productOrderId = "057064006030_01_P002";
productCatalogId = "20300103067D0B00";
imageDescriptor = "ORStandard2A";
bandId = "All-S";
panSharpenAlgorithm = "None";
numRows = 2055;
numColumns = 1317;
productLevel = "LV2A";
productType = "Standard";
numberOfLooks = 1;
radiometricLevel = "Corrected";
radiometricEnhancement = "Off";
bitsPerPixel = 16;
compressionType = "None";
BEGIN_GROUP = BAND_S1
ULLon = -72.38553062;
ULLat = -14.92054657;
ULHAE = 4883.66;
URLon = -72.29385656;
URLat = -14.91948015;
URHAE = 4883.66;
LRLon = -72.29210632;
LRLat = -15.05860407;
LRHAE = 4883.66;
LLLon = -72.38383950;
LLLat = -15.05968090;
LLHAE = 4883.66;
absCalFactor = 3.533070e-04;
effectiveBandwidth = 3.300000e-02;
TDILevel = 16;
END_GROUP = BAND_S1

And for MUL:

version = "28.3";
generationTime = 2017-10-27T10:54:22.000000Z;
productOrderId = "057064006040_01_P001";
productCatalogId = "A01001030994B600";
childCatalogId = "203001030994B700";
imageDescriptor = "ORStandard2A";
bandId = "MS1";
panSharpenAlgorithm = "None";
numRows = 7706;
numColumns = 5948;
productLevel = "LV2A";
productType = "Standard";
numberOfLooks = 1;
radiometricLevel = "Corrected";
radiometricEnhancement = "Off";
bitsPerPixel = 16;
compressionType = "None";
BEGIN_GROUP = BAND_B
ULLon = -72.38555662;
ULLat = -14.92050848;
ULHAE = 4907.70;
URLon = -72.27508428;
URLat = -14.91921885;
URHAE = 4907.70;
LRLon = -72.27332137;
LRLat = -15.05838576;
LRHAE = 4907.70;
LLLon = -72.38386498;
LLLat = -15.05968796;
LLHAE = 4907.70;
absCalFactor = 1.771990e-02;
effectiveBandwidth = 5.400000e-02;
TDILevel = 14;
END_GROUP = BAND_B

Looks alright to me with the only difference in the version. Yours shows 28.3 while mine is 27.6. I suppose there could be some changes in the format affecting this. I would like to have access to the data for testing.

How can I send you the data ? (171Mo)

Finally, I modified the wavelength in the metadata and succeeded to run FLAASH with the correct parameters.

But to perform an aerosol retrieval, I need 2 specific bands (1 VNIR at 660nm and a SWIR at 2100nm).
I tried to use the layer stacking tool to combine the SWIR and VNIR .dat files I have (after radiometric calibration) and then convert the file to BIL.

But it doesn't work (see warning and error messages below). Probably because azimuth and zenith are not the same for the two sensors (VNIR and SWIR)...
So does it means that I can't do the aerosol retrieval or is there another way to do it ?

The warning message:
---------------------------
ENVI Warning
---------------------------
Problems were found with the following lines of the
FLAASH parameters input file: C:\Users\lleg\AppData\Local\Temp\tile_template.txt

enviacc.spc.fwhm = [
---------------------------
OK
---------------------------

----------------------------------------------------------------------------------------
And the error message:
---------------------------
ENVI Error
---------------------------
Problem: The FLAASH program exited with the following errors:

ACC error: modrd5:reading archive file header
IDL error:
READU: End of file encountered. Unit: 102, File: C:\Users\lleg\AppData\Local\Temp\acc_modroot.fla

ACC_MODRD5 <( 9)>
ACC_KTAEROSOL <( 170)>
ACC_HYPER2 <( 597)>
ACC_ACC <( 191)>
ENVI_ACC_EVENT <(3184)>
ENVI_FLAASH_PROCESS_MANAGER <( 459)>
IDLRTMAIN <( 172)>
$MAIN$ <( 0)>
---------------------------
OK
---------------------------

I tried to combine VNIR and SWIR data to perform FLAASH (and take the mean value for zenith and azimuth), but I got this message:

---------------------------
ENVI Warning
---------------------------
Problems were found with the following lines of the
FLAASH parameters input file: G:\LL_WORKSPACE\OTR-SI381_GoldSpot_Peru\02_Rasters\1_Image_de_base\Essai_FLAASH\FLAASH_VNIR-SWIR\FLAASH_FILES\tile_template.txt

enviacc.spc.fwhm = [
---------------------------
OK
---------------------------

It seems that there is a problem with FWHM values:
fwhm = {
60.000000, 70.000000, 60.000000, 125.000000, 30000.000000,
40000.000000, 40000.000000, 40000.000000, 40000.000000, 40000.000000,
50000.000000, 70000.000000}

Here is the template.txt file:

;
;ENVI FLAASH PARAMETERS TEMPLATE (5.4.1)
;Written Mon Jan 22 10:49:51 2018
;
; Project Parameters
enviacc.prj.radiance_file = G:\LL_WORKSPACE\OTR-SI381_GoldSpot_Peru\02_Rasters\1_Image_de_base\Essai_FLAASH\CalRadio\GoldSpot_Peru_VNIR_SWIR_RadCal_BIL
enviacc.prj.reflect_file = G:\LL_WORKSPACE\OTR-SI381_GoldSpot_Peru\02_Rasters\1_Image_de_base\Essai_FLAASH\FLAASH_VNIR-SWIR\GoldSpot_Peru_VNIR_SWIR_FLAASH
enviacc.prj.filter_func_file = G:\ENVI_5.4.1_Trial\ENVI54\classic\filt_func\worldview3.sli
enviacc.prj.filter_func_file_index = 1
enviacc.prj.water_band_choice = 1.13
enviacc.prj.red_channel = 3
enviacc.prj.green_channel = 2
enviacc.prj.blue_channel = 1
enviacc.prj.water_abs_channel = 0
enviacc.prj.water_ref_channel = 0
enviacc.prj.kt_upper_channel = 9
enviacc.prj.kt_lower_channel = 3
enviacc.prj.kt_cutoff = 0.0800
enviacc.prj.kt_ratio = 0.5000
enviacc.prj.cirrus_channel = 0
enviacc.prj.water_retrieval = 0
enviacc.prj.modtran_directory = G:\LL_WORKSPACE\OTR-SI381_GoldSpot_Peru\02_Rasters\1_Image_de_base\Essai_FLAASH\FLAASH_VNIR-SWIR\FLAASH_FILES\
;
; MODTRAN Parameters
enviacc.modtran.visvalue = 40.0000
enviacc.modtran.f_resolution = 15.0000
enviacc.modtran.day = 21
enviacc.modtran.month = 10
enviacc.modtran.year = 2017
enviacc.modtran.gmt = 15.4833
enviacc.modtran.latitude = -14.9896
enviacc.modtran.longitude = -72.3388
enviacc.modtran.sensor_altitude = 617.0000
enviacc.modtran.ground_elevation = 4.8530
enviacc.modtran.view_zenith_angle = 169.9000
enviacc.modtran.view_azimuth = 129.0000
enviacc.modtran.atmosphere_model = 2
enviacc.modtran.aerosol_model = 1
enviacc.modtran.multiscatter_model = 2
enviacc.modtran.disort_streams = 8
enviacc.modtran.co2mix = 390.0000
enviacc.modtran.water_column_multiplier = 1.0000
;
; Image Parameters
enviacc.img.nspatial = 5035
enviacc.img.nlines = 7769
enviacc.img.data_type = 4
enviacc.img.margin1 = 0
enviacc.img.margin2 = 0
enviacc.img.nskip = 0
enviacc.img.pixel_size = 2.0000
enviacc.img.sensor_name = WorldView-3
;
; Analysis Parameters
enviacc.ana.aerosol_scaleht = 1.5000
enviacc.ana.use_adjacency = 1
enviacc.ana.output_scale = 10000.0000
enviacc.ana.output_diagnostic_files = 0
enviacc.ana.auto_save_template = 1
enviacc.ana.polishing_res = 0
enviacc.ana.aerosol_retrieval = 1
enviacc.ana.calc_wl_correction = 0
enviacc.ana.reuse_modtran_calcs = 0
enviacc.ana.use_square_slit_function = 0
enviacc.ana.convolution_method = fft
enviacc.ana.use_tiling = 1
enviacc.ana.tile_size = 100.0000
;
; GParameters Parameters
enviacc.gparameters.gfact = 0
enviacc.gparameters.gval = 0.0000
enviacc.gparameters.use_lr_method = 0
enviacc.gparameters.multikernel = 1
enviacc.gparameters.autoroi = auto
enviacc.gparameters.selarg = a
;
; Spectral Parameters
enviacc.spc.wavelength_units = nanometer
enviacc.spc.lambda = [
480.0000, 545.0000, 660.0000, 832.5000, 1209.1000, 1571.6000, 1661.1000,
1729.5000, 2163.7002, 2202.2000, 2259.3000, 2329.2000]
enviacc.spc.fwhm = [
60.000000, 70.000000, 60.000000, 125.000000, **********, **********, **********,
**********, **********, **********, **********, **********]
enviacc.img.p_input_scale = [
1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000, 1.0000,
1.0000, 1.0000, 1.0000, 1.0000, 1.0000]


Thank you.

Yes, I agree that your FWHM don't look correct. What does it show in the original VNIR and SWIR files when you view the spectral information using View Metadata? Are they the same after you process the files using Radiometric Calibration? After Layer Stacking? I was able to Layer Stack first, then Radiometric calibration. The resulting FWHM in my header file are:
fwhm = {
0.080000, 0.060000, 0.100000, 0.100000, 0.040000, 0.040000, 0.050000,
0.070000, 0.070000}

Also your template shows you are using the WV-3 sensor and filter function?
enviacc.img.sensor_name = WorldView-3
enviacc.prj.filter_func_file = G:\ENVI_5.4.1_Trial\ENVI54\classic\filt_func\worldview3.sli