Hi Nigel,
As already suggested by Peter the issue is coming since the las files are not having any classification information. This is the information that we get by running Lasinfo tool on any 1 las file from City of Melbourne data.
As you can see in the last line it shows that 1205187 points are never classified.
Currently in LiDAR surface tool we only generate output on the basis of classification. If input data doesn't have any points for the classification parameters selected then we give "No valid station found" error. If you provide any file with classified points then it will work.
We can take an enhancement for future MapInfo release to improve the error message and also to allow surface tool to work on unclassified points.
For now as a workaround you can use Triangulation tool under Raster TAB->Create Raster to generate output from the same. Just select the list of input files in the tool to generate the output.
Below is the output that I got:
Hope this helps. Please let us know if there are any follow up queries on the same.
Thanks
Anshul
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Anshul Goel
Knowledge Community Shared Account
Shelton CT
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Original Message:
Sent: 12-10-2020 06:13
From: Peter Horsbøll Møller
Subject: LIDAR in MapInfo Advance
Hey
No, I don't think we have included potential error codes in the documentation. Do you get an error code besides -1?
Did the first dataset, you used, contain a Classification field?
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Peter Horsbøll Møller
Principal Presales Consultant | Distinguished Engineer
Precisely | Trust in Data
Original Message:
Sent: 12-10-2020 05:49
From: Nigel Lester
Subject: LIDAR in MapInfo Advance
Hi Peter,
I tried some different files and they worked OK. Maybe a classification thing with the other files??
Is there anywhere in the documentation that describes the error codes for MapInfo Advance?
Cheers,
Nigel
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Nigel Lester
The Spatial Distillery Co
Fitzroy VIC
Original Message:
Sent: 12-10-2020 02:17
From: Peter Horsbøll Møller
Subject: LIDAR in MapInfo Advance
I wonder if the data doesn't hold a "Classification" column. From the site I found this:
| XYZ points for buildings, terrain, vegetation (non classified) for the City of Melbourne area. |
Can you try to create a grid from the file? In the window where you select the input data, you are also asked to select a column for the grid values. Here you can see what fields are included in the dataset.
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Peter Horsbøll Møller
Principal Presales Consultant | Distinguished Engineer
Precisely | Trust in Data
Original Message:
Sent: 12-10-2020 01:45
From: Nigel Lester
Subject: LIDAR in MapInfo Advance
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Nigel Lester
The Spatial Distillery Co
Fitzroy VIC
Original Message:
Sent: 12-10-2020 01:40
From: Peter Horsbøll Møller
Subject: LIDAR in MapInfo Advance
Hi Nigel
MapInfo Pro v2019.3 comes with a couple of LiDAR tools. Are you using any of these or are you mainly trying to create a grid from the LiDAR data?
Can you share a screenshot of the settings you are using?
Thanks
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Peter Horsbøll Møller
Principal Presales Consultant | Distinguished Engineer
Precisely | Trust in Data
Original Message:
Sent: 12-10-2020 00:03
From: Nigel Lester
Subject: LIDAR in MapInfo Advance
Hi All,
I am trying to process some LIDAR data with MapInfo Advanced 2019.3 and getting the following error in the log.
"Error number: 287 occurred in file: in function: at line: -1 reporting: ""Error: No valid stations found."""
Any idea /advice on what this error relates to? I am trying to use some las files that are available here ->
City of Melbourne 3D Point Cloud 2018 | Open Data | Socrata
Thanks,
Nigel
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Nigel Lester
The Spatial Distillery Co
Fitzroy VIC
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