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The values in the ground heightmap are incorrect when loading a DTM from a GeoTIFF file. #191
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Activity
I think we should start making our issues in English now (project will be released in August)
Reacted by Théo SZANTOPlease provide a minimal reproducible example (or at least a working example).
(tip: parameter.xml file is much reliable than partial file you sent)
Second tip:
You can create foldable section in GitHub Markdown using the<details>HTML tag:<details> <summary>This is shown as the title of the foldable section</summary> This is the (possibly extra long) content that is only displayed if the user clicked on the text to expand it! Lorem ipsum... </details>
This is shown as the title of the foldable section
This is the (possibly extra long) content that is only displayed if the user clicked on the text to expand it!
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This works particularly well to show long files (but don't forget to add a blank line after
<summary>...</summary>otherwise the```code block may not render properly)Example 1 -
parameters.yamlworldName: Parc - Albania verticalScale: 1.0 horizontalScale: 1.0 area: center: latitude: 42.067834 longitude: 19.513717 extentX: 250 extentY: 250 crs: EPSG:6870 heightmaps: ground: default: 0 water: default: 0 forEachTile: altitude: type: sequence do: - type: fetchData modelType: altitude provider: type: geotiff filePath: data/dtm.tif - type: populateHeightmap models: type: altitude heightmap: ground - type: setSpawn heightmap: sum: [ground, 1] x: 0 y: 0 - type: renderHeightmap at: ground place: structure: - put: *voxel-grass at: [0, 0, 0] - put: *voxel-dirt at: [0, 0, -3..-1] - put: *voxel-stone at: [0, 0, -20..-4] roads: after: altitude type: sequence do: #- type: fetchData # modelType: roads # provider: # type: shapefile # filePath: data/infra_total.shp - type: fetchData modelType: roads provider: type: shapefile filePath: "data/Transporti Rrugor/LinjeRrugor.shp" - type: renderLines2d models: type: roads heightmap: ground structure: axes: [ y ] blueprint: "██████" with: "█": default:stone bridge: after: altitude type: noOperation # idk how i can do that for now, missing tasks for. footway: after: altitude type: sequence do: - type: fetchData modelType: footways provider: type: overpass url: https://overpass-api.de/api/interpreter query: nwr[highway=footway] retry: 3 - type: renderLines2d models: type: footways heightmap: ground structure: axes: [ y ] blueprint: "██" with: "█": default:sandstone buildings: after: altitude type: sequence do: - type: fetchData modelType: buildings provider: type: overpass url: https://overpass-api.de/api/interpreter query: nwr[building] retry: 3 - type: computeHeightmapStats models: type: buildings heightmap: ground compute: minimum: minimum-ground-altitude maximum: ground-floor-altitude - type: fillBetweenHeightmapAndMetadata models: type: buildings heightmap: ground altitudeMetadata: ground-floor-altitude placeAbove: default:air placeBelow: wool:orange - type: renderSurfaces models: type: buildings heightmap: ground place: wool:orange water: after: altitude type: sequence do: - type: fetchData modelType: water provider: type: shapefile filePath: data/III_Rrjedhe_ujore/III_Rrjedhe_ujore.shp - type: copyHeightmap models: type: water from: localMin: ground range: 9 to: ground - type: copyHeightmap models: type: water from: 1 to: water - type: copyHeightmap models: type: water from: remap: manhattan: water maximumDistance: 12 targetValue: 0 mapping: 0: 0 1: 1 2: 8 3..3: 10 4..6: 11 7..12: 12 to: water - type: renderHeightmap minimum: sum: - ground - 1 - product: [ -1, water ] maximum: ground place: structure: - put: *voxel-water at: [ 0, 0, 0 ] # This a dirt fix to remove vegetation on water - put: *voxel-air at: [ 0, 0, 1..12 ] barrier: after: altitude type: sequence do: - type: fetchData modelType: barriers provider: type: overpass url: https://overpass-api.de/api/interpreter query: nwr[barrier=city_wall] retry: 3 - type: renderLines2d models: type: barriers heightmap: ground structure: axes: [ y ] blueprint: "██" with: "█": wool:grey tree: after: altitude type: sequence do: - type: fetchData modelType: trees provider: type: overpass url: https://overpass-api.de/api/interpreter query: nwr[natural=tree] retry: 3 - type: renderSurfaces models: type: trees heightmap: sum: - ground - 1 place: structure: - put: wool:green at: [ 0, 0, 0..5 ]
PS: I think @pyrollo is referring to
parameters.yaml, unless he created aXMLversion in secret! 😄Could you please try on the
indy/fix-geotiffbranch, to see if this was a shadow bug of #187?
It caused issue with the computed envelope, which defines the limits of the height data, and this might explain your second example (and to some extent, maybe the first one too).
I have good feelings about this one! :)- changed the title
[-]Valeurs de la heightmap incorrect avec un MNT chargé depuis un fichier en format GeoTIFF[/-][+]The values in the `ground` heightmap are incorrect when loading a DTM from a `GeoTIFF` file.[/+]on Jun 22, 2026 This issue is probably not fixed yet. I'm waiting to finish PR #209 to see if I still have the same problem.
(I haven't tested the generator's behavior with DTMs from other sources.)
DTM used :
**Parametrage 1 utilisé : **
Generation result :
**In this screenshot, you can see that the heightmap does not reach its expected limits : **
