Noob On Editor, Srtm File Format

Discussion in 'PC Editor Discussion' started by Grim_reaper68, Dec 31, 2025.

  1. Grim_reaper68

    Grim_reaper68 New Member

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    Hi
    I'm discovering the editor, followed some tutorials, but, I can't use SRTM files. In fact in QGIS for example the SRTM downloader give me only Tiff files, and if I try to convert them, I have different issues (size, or coordinates). I tried to find hgt files, but it's almost impossible.
    Maybe there is a issue with the name of the files, or the coordinate system.
    What files types could be used for the SRTM?

    Here the log of a try to convert a file in QGIS.

    Version de QGIS : 3.44.6-Solothurn
    Révision du code : fb066c58058
    Version de Qt : 5.15.13
    Version de Python : 3.12.12
    Version de GDAL : 3.12.1
    Version de GEOS : 3.14.1-CAPI-1.20.5
    Version de Proj : Rel. 9.7.1, December 1st, 2025
    Version de PDAL : 2.9.0 (git-version: 69639b)
    Algorithme commencé à: 2025-12-31T14:33:28
    Démarrage de l'algorithme 'Convertir'…
    Input parameters:
    { 'COPY_SUBDATASETS' : False, 'CREATION_OPTIONS' : None, 'DATA_TYPE' : 0, 'EXTRA' : '', 'INPUT' : 'D:/SRTM/SRTMGL1.tiff', 'NODATA' : None, 'OUTPUT' : 'D:/LIDAR TSW/SRTM/CCM1.hgt', 'TARGET_CRS' : QgsCoordinateReferenceSystem('EPSG:3857') }

    Commande GDAL :
    gdal_translate -a_srs EPSG:3857 -of SRTMHGT D:/SRTM/SRTMGL1.tiff "D:/LIDAR TSW/SRTM/CCM1.hgt"
    Sortie de commande GDAL :
    Warning 1: The corner coordinates of the source are not properly aligned on plain latitude/longitude boundaries.
    ERROR 1: Image dimensions should be 1201x1201, 1801x3601, 3601x3601 or 7201x7201.
    Input file size is 25200, 14400
    Le processus a renvoyé le code erreur 1
    Execution completed in 0.07 seconds
    Résultats :
    OUTPUT: D:/LIDAR TSW/SRTM/CCM1.hgt

    Chargement des couches de résultat
    Les couches suivantes n'ont pas été générées correctement.
    • D:/LIDAR TSW/SRTM/CCM1.hgt
    Vous pouvez vérifier le Panel de messages du journal dans la fenêtre principale de QGIS pour trouver plus d'informations à propos de l'exécution de l'algorithme.
     
    Last edited: Dec 31, 2025

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