ProfileMaster
Longitudinal profiles, cross-sections, 3D axis, DTM buffer and contour lines from vector alignments or loaded QGIS layers over Digital Terrain Models. / Perfiles longitudinales, transversales, eje 3D, buffer MDT y curvas de nivel desde archivos o capas cargadas en QGIS.
QGIS plugin to generate topographic longitudinal profiles from vector alignments
and Digital Terrain Models (GeoTIFF, ASC, IMG, BIL, FLT, DEM, HGT — any GDAL-supported format).
Supported alignment formats: DXF, SHP, KML, KMZ, GeoPackage, GML, GPX, GeoJSON.
Automatic CRS reprojection (e.g. WGS84 axis over UTM DTM).
Main features:
- DTM and alignment can be loaded from file/folder OR selected directly from layers already loaded in the QGIS project.
- Smart DTM cache: scans folder once, reuses the index for subsequent runs.
- Automatic detection of DTM tiles intersecting the alignment.
- Bilinear interpolation of terrain elevations along the axis.
- Configurable segmentation interval (e.g. 1 m for smooth profiles).
- Longitudinal profile in standard topographic style: terrain line, comparison plane,
partial/total distances in PK format (0+860) and elevations at original vertices.
- Independent horizontal and vertical scales.
- Automatic or fixed comparison plane.
- DXF export with polylines, annotations and data table (guitar).
- CSV export with partial/total distances and elevations.
- Cross-section profiles: configurable spacing, width and scale. DXF grid layout
with terrain, axis, PK, comparison plane and elevation table.
- 3D axis export: original vertices with PK labels (horizontal text, no Z annotation)
plus optional clean 3D polyline draped on DTM at segmentation interval.
- DTM buffer export: GeoTIFF clipped to alignment bounding box + buffer, LZW-compressed.
- Contour lines: DXF with normal and master contours, Chaikin smoothing,
and minimum-length filter to suppress tiny closed contours.