RoConvert features and formats guide

Recommended workflow for real-world projects

Prepare the file, run the conversion, verify the coordinate system and result, then keep the ZIP package in the project folder.

Server performance and processing queue

RoConvert uses a queue so the website, forms and instant quote calculator remain available while heavy files are processed.

• A maximum of 3 conversions or heavy viewers run simultaneously; the rest wait in the queue and start automatically when a slot becomes available.
• CSV/TXT and point on map are lightweight operations and generally remain available even if LAS/LAZ or CAD/GIS are waiting.
• If the server is busy, LAS/LAZ, Potree viewer or CAD/GIS jobs may be temporarily postponed to protect the processor and concurrent processes.
• The limits protect service stability during periods of simultaneous processing.

Currently accepted formats

CAD/GIS routes and CRS logic

Choose the route according to the desired effect: some conversions numerically change coordinates between Stereo70 and WGS84, while others only change the file format.

• CAD/GIS options are global: Keep Z preserves the existing Z when the file has it, and Split by layers generates separate files by layer alongside the main result.
• RoConvert cannot safely identify the coordinate system in all workflows. Confirm the source system and check a known point before delivery. GPKG ↔ DXF and DWG → DXF workflows change only the format, without numeric coordinate transformation; for DXF → GPKG, EPSG:3844 is only the output CRS label. DWG → DXF conversion uses a Python parser for tested versions and does not cover all AutoCAD/ODA variants.

What you receive in the download

Downloadable results are ZIP packages so that the converted file and Masuram.ro offer material remain together.

Ground for DTM from LAS/LAZ

The ground extraction tool does not convert coordinates. It reads all classes in the file as a neutral source, ignores existing classification and writes only points estimated as ground to the result, reclassified as LAS class 2 ground.

• CSF means Cloth Simulation Filter: the cloud is inverted, a numerical cloth is dropped over the terrain shape, and points close to the cloth are retained as ground.
• The default Clean DTM profile uses stricter thresholds for topography and limits retained points in areas with vertical objects. Balanced Terrain retains somewhat more context, while Complete (V19-compatible) reproduces the former more permissive filtering for work that depends on it.
• Additional cleaning is optional and runs after ground detection. It removes isolated points from the result; Light retains more, Balanced is the normal choice, and Strong cleans more aggressively, but may thin sparse real areas, ditches, edges or slopes.
• Planar structures / roofs is a separate advanced option, unchecked by default. When you enable it, the engine removes flat, compact components raised above the ground; it may also cut out real terraces, platforms, embankments or retaining walls, so the result must be visually checked.
• The ZIP package includes a technical log with the initial total, exported ground points, points removed as planar structures/roofs, removed isolated points, points filtered as non-ground, the cloth-simulation-filter-csf algorithm and the CSF settings used.
• Visually check the result in areas with dense vegetation, bridges, vertical walls, compact buildings, water or very sparse clouds; no automatic filter replaces final surveying control.

Potree LAS/LAZ viewer

The Potree viewer is for rapid visual inspection of LAS/LAZ point clouds. It does not convert coordinates when you upload a file directly for viewing.

• For direct upload, choose a local LAS or LAZ; the server temporarily builds the Potree octree and the window opens automatically when preparation is complete.
• Converted LAS/LAZ results and ground results can be opened in Potree from the existing actions, without uploading the file again from your computer.
• The viewer starts in Height/elevation mode and supports RGB, Brightness/intensity and LAS Classes when these attributes are present in the point cloud.
• The Quality selector offers Maximum 10M, High 6M, Balanced 3M and Fast 1.5M to balance detail with browser speed.
• The LiDAR flight services link from the viewer remains in a new tab so that the Potree session is not lost.
• Use the viewer for inspection, but check the system, elevation, classes, and deliverables in surveying/CAD/GIS applications before delivery.

CSV/TXT: file structure

Optional header, comma/semicolon/tab delimiter, decimal or DMS coordinates, options for Long/Lat and file without names.

RoConvert detects the delimiter and header, retains additional columns and can reverse the coordinate pair when the file is written in reverse order.

Check before upload

Most errors come from the wrong coordinate system, swapped columns or mixed delimiters.

• Confirm whether the file is ETRS89, Stereo 70 / EPSG:3844 or UTM 34N/35N.
• For tables, keep the same column order and select Long/Lat or No names only when the file requires it.
• If you use a decimal comma in coordinates, separate columns with a semicolon or tab.
• For LAS/LAZ, use Auto only when you are unsure of the zone; for final deliveries, note UTM 34N or 35N in the project documentation.
• For CAD/GIS, check a known point, separate layers, preserved Z and the output system before delivery. For DWG/GPKG/DXF format-only, check in CAD/GIS that useful entities were exported; coordinates remain the originals.
• After conversion, check a known point and the rows marked with an error before delivery.

Coordinate format

RoConvert reads simple tables: one point per row, with values separated by commas, semicolons or tabs. Use a dot or comma as the decimal separator, but avoid ambiguous separators in the same file.

DMS notations accepted by RoConvert

For ETRS89, RoConvert accepts multiple degree-minute-second notations in the same latitude or longitude column. Direction is written at the end: N/E remain positive, S/W become negative. If you use a decimal comma in seconds or minutes, use semicolon or tab as the file delimiter, not comma.

Quick examples

RoConvert speeds up technical checking, but the result must be checked before official use: coordinate system, MN75 elevation, UTM zone, rows with errors and units.

nume,lat,lon,h,descriere
P1,47.71566666,22.47555555,162.0,borna test

nume,nord,est,inaltime,lot
P1,693771.732,310723.519,122.591,A1

Nord(Y),Est(X)
693771.732,310723.519
=> 47.71566667,22.47555556