Opening this "elevation" data

alberto_fralberto_fr Global Mapper UserPosts: 18Trusted User
Hi,
Its not actually elevation, but a clutter 21 classes telco file,
It happens to me very often after i upgraded to 20.x's versions 
https://www.dropbox.com/s/yld21s5s25xxa8x/clutter.rar?dl=0
Most of the times I cant open the file right away, i have to make a plan, using older versions or try to open it several times (sometimes it opens to the third or fifth!) but most of the times it depends on a lot of things, like if i have opened before the ortho or the actual evelation DTM/DHM/DSM over the area...

This creates a bottleneck this side as i have to open different versions, drop off vectors to both of them, overlay in both of the versions, etc, etc, etc Could you please be so kind and let me know WHY this could happen? do i have any parameter by default that might affect the fact of not being able to OPEN anything???

PLease help me!!!!
Thanks in advance,

Alberto

DESCRIPTION=TEST_clut_1_1
UPPER LEFT X=340522.500
UPPER LEFT Y=6328247.500
LOWER RIGHT X=349737.500
LOWER RIGHT Y=6310652.500
WEST LONGITUDE=70° 42' 48.6474" W
NORTH LATITUDE=33° 10' 22.2735" S
EAST LONGITUDE=70° 36' 41.8382" W
SOUTH LATITUDE=33° 19' 58.1378" S
UL CORNER LONGITUDE=70° 42' 37.5081" W
UL CORNER LATITUDE=33° 10' 22.2735" S
UR CORNER LONGITUDE=70° 36' 41.8382" W
UR CORNER LATITUDE=33° 10' 27.0195" S
LR CORNER LONGITUDE=70° 36' 52.3348" W
LR CORNER LATITUDE=33° 19' 58.1378" S
LL CORNER LONGITUDE=70° 42' 48.6474" W
LL CORNER LATITUDE=33° 19' 53.3632" S
PROJ_DESC=UTM Zone -19 / WGS84 / meters
PROJ_DATUM=WGS84
PROJ_UNITS=meters
EPSG_CODE=EPSG:32719
BBOX AREA=162.27 sq km
LOAD TIME=2.00 s
FILE_CREATION_TIME=2/18/2020 9:40:58 AM
FILE_MODIFIED_TIME=2/18/2020 9:40:58 AM
NUM COLUMNS=1844
NUM ROWS=3520
NUM BANDS=1
PIXEL WIDTH=5 meters
PIXEL HEIGHT=5 meters
MIN ELEVATION=2 m
MAX ELEVATION=21 m
ELEVATION UNITS=METERS
BIT DEPTH=16
SAMPLE TYPE=Signed 16-bit Integer

Answers

  • bmg_bobbmg_bob Global Mapper Programmer Posts: 2,114
    Hello Alberto,

    Using Global Mapper 20.0, 20.1 and 21.0, I was able to open that file without any problems several times in a row. Can you be more specific about what happens when you try to open it? Is there an error message? When I opened the file, Global Mapper showed a prompt asking whether the data is in the Northern Hemisphere or Southern Hemisphere. I selected Northern Hemisphere. Which option did you choose?

    Cheers,
    Bob
  • alberto_fralberto_fr Global Mapper User Posts: 18Trusted User
    thank you bob,
    no error message, the left side bar shows the data has been opened but the data is not there. As i told you, this seems a-systematic so sometimes it doesnt happen, that's why i think its a "by default" parameter...
    for instance, see the image? the DTM should be there but in fact its not!!! (metadata shows minmax wrong values...)

    Thanks a lot for your advise,
    Alberto

    FILENAME=Y:\_PEOPLE\FRED\20200127 CHILE\COYHAIQUE_5m_Atoll\COYHAIQUE_5m_Atoll\height\COYHAIQUE_dtm_1_1
    DESCRIPTION=COYHAIQUE_dtm_1_1
    UPPER LEFT X=252967.500
    UPPER LEFT Y=4955752.500
    LOWER RIGHT X=271782.500
    LOWER RIGHT Y=4938497.500
    WEST LONGITUDE=72° 10' 16.1189" W
    NORTH LATITUDE=45° 30' 28.6885" S
    EAST LONGITUDE=71° 55' 18.7744" W
    SOUTH LATITUDE=45° 40' 10.1645" S
    UL CORNER LONGITUDE=72° 09' 44.6972" W
    UL CORNER LATITUDE=45° 30' 28.6885" S
    UR CORNER LONGITUDE=71° 55' 18.7744" W
    UR CORNER LATITUDE=45° 30' 51.7710" S
    LR CORNER LONGITUDE=71° 55' 47.8148" W
    LR CORNER LATITUDE=45° 40' 10.1645" S
    LL CORNER LONGITUDE=72° 10' 16.1189" W
    LL CORNER LATITUDE=45° 39' 46.9574" S
    PROJ_DESC=UTM Zone -19 / WGS84 / meters
    PROJ_DATUM=WGS84
    PROJ_UNITS=meters
    EPSG_CODE=EPSG:32719
    BBOX AREA=324.83 sq km
    LOAD TIME=0.67 s
    FILE_CREATION_TIME=1/28/2020 3:37:40 PM
    FILE_MODIFIED_TIME=1/28/2020 3:37:40 PM
    NUM COLUMNS=3764
    NUM ROWS=3452
    NUM BANDS=1
    PIXEL WIDTH=5 meters
    PIXEL HEIGHT=5 meters
    MIN ELEVATION=0 m
    MAX ELEVATION=0 m
    ELEVATION UNITS=METERS
    BIT DEPTH=16
    SAMPLE TYPE=Signed 16-bit Integer

  • bmg_bobbmg_bob Global Mapper Programmer Posts: 2,114
    Hello Alberto,

    I'm afraid that I don't have a good answer for you. I suggest that you contact Blue Marble Support directly via email (geohelp@bluemarblegeo.com) to see if they have more insight. Please include a detailed description of your workflow and both the ortho and DTM files you are using. Thanks.

    Cheers,
    Bob
  • alberto_fralberto_fr Global Mapper User Posts: 18Trusted User
    thanks anyway,
    Regards,
    Alberto
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