Since you did not specify coordinates for your project area, I will post a "worked example" using Global Mapper.
1.)
Download (
...and do not decompress from archive, as Global Mapper can read "*.tar.gz" files directly):
http://ifsar.gina.alaska.edu/data/2...1/IFSAR.SDMI.2014.INTERMAP.DTM_N70W151.tar.gz
2.)
Global Mapper Menu > File > Open Data File(s)... >
Open:
IFSAR.SDMI.2014.INTERMAP.DTM_N70W151/IFSAR.SDMI.2014.INTERMAP.DTM_N70W151.tar.gz
3.)
Global Mapper Menu > Tools > Control Center > select "
DTM_N7000W15100P.TIF" > click
[Metadata] button
a.) On [Metadata] tab, click
[Copy to Clipboard] button
b.) Paste into Windows
NotePad, save as "
DTM_N7000W15100P_TIF_METADATA.txt"
FILENAME=DTM_N7000W15100P.TIF ([
path]\IFSAR_SDMI_2014_INTERMAP_DTM_N70W151\IFSAR.SDMI.2014.INTERMAP.DTM_N70W151.tar.gz)
DESCRIPTION=DTM_N7000W15100P.TIF
UPPER LEFT X=114887.500
UPPER LEFT Y=2255642.500
LOWER RIGHT X=126512.500
LOWER RIGHT Y=2227112.500
WEST LONGITUDE=151.04113659° W
NORTH LATITUDE=70.25746969° N
EAST LONGITUDE=150.70578666° W
SOUTH LATITUDE=69.99250716° N
UL CORNER LONGITUDE=151.00805576° W
UL CORNER LATITUDE=70.25746969° N
UR CORNER LONGITUDE=150.70578666° W
UR CORNER LATITUDE=70.25244901° N
LR CORNER LONGITUDE=150.74219928° W
LR CORNER LATITUDE=69.99250716° N
LL CORNER LONGITUDE=151.04113659° W
LL CORNER LATITUDE=69.99746542° N
PROJ_DESC=Albers Conic / NAD83 / meters
PROJ_DATUM=NAD83
PROJ_UNITS=meters
EPSG_CODE=EPSG:3338
COVERED AREA=331.66 sq km
LOAD TIME=0.30 s
NUM COLUMNS=2326
NUM ROWS=5707
NUM BANDS=1
PIXEL WIDTH=5 meters
PIXEL HEIGHT=5 meters
MIN ELEVATION=0.015 meters
MAX ELEVATION=58.292 meters
ELEVATION UNITS=meters
BIT DEPTH=32
SAMPLE TYPE=32-bit Floating Point
PHOTOMETRIC=Greyscale (Min is Black)
BIT_DEPTH=32
SAMPLE_FORMAT=Floating Point
ROWS_PER_STRIP=1
COMPRESSION=None
ORIENTATION=row 0 top, col 0 lhs
PIXEL_SCALE=( 5, 5, 1 )
TIEPOINTS=( 0.00, 0.00, 0.00 ) --> ( 114887.500, 2255642.500, 0.000 )
MODEL_TYPE=Projection Coordinate System
RASTER_TYPE=Pixel is Point
VERT_DATUM=None Specified
4.)
Global Mapper Menu > Tools > Control Center > select "
DTM_N7015W15100P.TIF" > click
[Metadata] button
a.) On [Metadata] tab, click
[Copy to Clipboard] button
b.) Paste into Windows
NotePad, save as "
DTM_N7015W15100P_TIF_METADATA.txt"
FILENAME=DTM_N7015W15100P.TIF ([
path]\IFSAR_SDMI_2014_INTERMAP_DTM_N70W151\IFSAR.SDMI.2014.INTERMAP.DTM_N70W151.tar.gz)
DESCRIPTION=DTM_N7015W15100P.TIF
UPPER LEFT X=113652.500
UPPER LEFT Y=2282977.500
LOWER RIGHT X=125172.500
LOWER RIGHT Y=2254487.500
WEST LONGITUDE=151.04151439° W
NORTH LATITUDE=70.50744086° N
EAST LONGITUDE=150.70533937° W
SOUTH LATITUDE=70.24252161° N
UL CORNER LONGITUDE=151.00812601° W
UL CORNER LATITUDE=70.50744086° N
UR CORNER LONGITUDE=150.70533937° W
UR CORNER LATITUDE=70.50245816° N
LR CORNER LONGITUDE=150.74209634° W
LR CORNER LATITUDE=70.24252161° N
LL CORNER LONGITUDE=151.04151439° W
LL CORNER LATITUDE=70.24744149° N
PROJ_DESC=Albers Conic / NAD83 / meters
PROJ_DATUM=NAD83
PROJ_UNITS=meters
EPSG_CODE=EPSG:3338
COVERED AREA=328.2 sq km
NUM COLUMNS=2305
NUM ROWS=5699
NUM BANDS=1
PIXEL WIDTH=5 meters
PIXEL HEIGHT=5 meters
MIN ELEVATION=-10000 meters
MAX ELEVATION=14.801 meters
ELEVATION UNITS=meters
BIT DEPTH=32
SAMPLE TYPE=32-bit Floating Point
PHOTOMETRIC=Greyscale (Min is Black)
BIT_DEPTH=32
SAMPLE_FORMAT=Floating Point
ROWS_PER_STRIP=1
COMPRESSION=None
ORIENTATION=row 0 top, col 0 lhs
PIXEL_SCALE=( 5, 5, 1 )
TIEPOINTS=( 0.00, 0.00, 0.00 ) --> ( 113652.500, 2282977.500, 0.000 )
MODEL_TYPE=Projection Coordinate System
RASTER_TYPE=Pixel is Point
VERT_DATUM=None Specified
5.)
Global Mapper Menu > Tools > Configure... >
[Projection Tab]
Projection: "
Geographic (Latitude / Longitude)"
Datum: "
WGS84"
Planar Units: "
ARC DEGREES"
Parameters:
Attribute: "
CENTRAL LONGITUDE"
Value: "
0"
6.) Global Mapper Menu > File > Export >
Export Elevation Grid Format...
a.) At 'Select Export Format' prompt, choose "
GeoTIFF" from the pick list
b.) In 'GeoTIFF Export dialog, on [
GeoTIFF options] tab:
File Type: "
Elevation (32-bit integer samples) (=Radio Button 'Ticked')
Vertical Units: "
Meters"
Resampling: "
Bicubic Interpolation"
Sample Spacing / Scale: (
disregard =Automatically filled in by Global Mapper)
Always Generate Square Pixels:
(=Checked)
Always Export At The Fixed Scale 1: "
0"
(=Not-Checked)
DPI Value To Save in Image (0 for None): "
0"
(=Not-Checked)
Compression:
Default (No Compression)
ADVANCED: Use Tile Rather than Strip Orientation:
(=Not-Checked)
ADVANCED: JPEG-in-TIFF Quality: "
75" (
disregard =Automatically filled in by Global Mapper)
Interpolate to Fill Small Gaps in Data:
(=Checked)
Generate TFW (World) File:
(=Checked)
Generate PRJ File:
(=Checked)
Generate OziExplorer .map File:
(=Not-Checked)
ADVANCED: Don't Write GeoTIFF Header:
(=Not-Checked)
c.) In 'GeoTIFF Export dialog, on [
Tiling] tab:
No Tiling - Just One Export File:
(=Radio Button 'Ticked')
Skip Existing Files (Use to Complete Cancelled Exports):
(=Not-Checked)
d.) In 'GeoTIFF Export dialog, on [
Export Bounds] tab:
All Loaded Data:
(=Radio Button 'Ticked')
e.) In 'GeoTIFF Export dialog, on
[Export Bounds] tab: click
[OK] button <'Save as' dialog opens>
f.) In 'GeoTIFF Export dialog >
[Export Bounds] tab > 'Save as' dialog, enter:
"DTM_N7000W15100P+DTM_N7015W15100P.TIF"; click [Save] button
Result: GeoTiff elevation source data file for FS / P3D Resample to create a terrain mesh BGL
INF file - for use with above GeoTiff elevation file:"DTM_N7000W15100P+DTM_N7015W15100P.TIF"
Code:
[Source]
Type=GeoTIFF
Layer=Elevation
MinValidValue=0
NullCellValue=-32767
SourceDir="."
SourceFile="DTM_N7000W15100P+DTM_N7015W15100P.TIF"
PixelIsPoint=1
[Destination]
DestDir="."
DestBaseFileName="DTM_N7000W15100P+DTM_N7015W15100P"
DestFileType=BGL
CompressionQuality=97
LOD=Auto,13
FractionBits=3
7.) Copy and paste
all the above [
Source] and [
Destination] code into Windows NotePad, save as:
"DTM_N7000W15100P+DTM_N7015W15100P.INF"
8.) Create a work folder named
"DTM_N7000W15100P+DTM_N7015W15100P" containing these
(3) files:
* "DTM_N7000W15100P+DTM_N7015W15100P.TIF"
* "DTM_N7000W15100P+DTM_N7015W15100P.INF"
* FSX or P3D "Resample.exe"
9.) Drag-and-Drop
"DTM_N7000W15100P+DTM_N7015W15100P.INF" onto "Resample.exe"
a.) Resample should proceed without interruption, and output this terrain mesh BGL file:
DTM_N7000W15100P+DTM_N7015W15100P.BGL
10.)
In FS or P3D:
a.) Add that BGL to:
(1) ...a \Scenery sub-folder below a top folder
(2) ...in a active scenery layer
(3) ...at the top of FS / P3D Scenery Library GUI
b.) Set Terrain mesh complexity to 100 percent, and Terrain Mesh Resolution to 5 Meters
c.) Load a flight at
Alpine Airstrip, Deadhorse, Alaska (
ICAO:
AK15) ...to inspect the resulting terrain mesh.
PS: For related considerations ...see:
http://www.fsdeveloper.com/forum/threads/about-geotiff-resmaple.430118/#post-671613
Hope this example work-flow "works" properly for you !
GaryGB
