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Sample LAS 1.5 files 

12-20-2025 04:42 PM

APSRS would like to start a repository of sample LAS and LAZ 1.5 files for testing purposes.  Please load your LAS and LAZ 1.5 files in this directory for community testing.

Thank you,


Matt Bethel


#LAS

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Sample LAS 1.5 file from Optech's LMS software   220.69 MB   1 version
Uploaded - 05-27-2026
I have replaced the original file that had the same start and end times with a different LAS 1.5 file that has valid times. Thank you Erzhuo for pointing this out.
 
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Comments

Erzhuo Che
3 days ago

Thanks Matt, I'm attaching the information extracted from EZDATAMD software below as a reference: 

--------------------------------------------------------

!!!!?!!?!!!!!!!!?!!!!!!!!!?!!!!!!!!!?!!!!!!!!!!!!!!!!!!!

             EZPC - EZLAS             

             EZ Point Cloud Toolkit          

             By Ezra Che @ EZDataMD, LLC    

!!!!!!!!!?!!!!!!!?!!!!!!!!!!!!!?!!!!!!!!?!!!!!!!!!!!!!!!

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 * The License is Valid until 06-30-2026 *

                C:\Users\erzhu\Downloads\L0008-1-M01-S1-C1_r\L0008-1-M01-S1-C1_r.las

Show LAS Info:

Show Field Stats? (0 - No, 1 - Yes): 1

Show Point Record? (0 - No, 1 - Yes): 1

Show All at Once? (0 - No, 1 - Yes): 1

                File #1/1: C:\Users\erzhu\Downloads\L0008-1-M01-S1-C1_r\L0008-1-M01-S1-C1_r.las

Header Info:

                File_Signature: LASF

                File_Source_ID: 811

                Global_Encoding_GPS_Time_Type: set

                Global_Encoding_Waveform_Data_Packets_Internal: not set

                Global_Encoding_Waveform_Data_Packets_External: not set

                Global_Encoding_Synthetic_Return_Numbers: not set

                Global_Encoding_WKT: set

                Global_Encoding_Time_Offset_Flag: set

                Project_ID_GUID_data: {00000000-0000-0000-0000-000000000000}

                System_Identifier: Galaxy 5060483

                Generating_Software: OptechLMS

                File_Creation_Time_Year (Day): 2025 (300)

                Version (Header Size): 1.5 (393)

                Point_Data_Format_ID (Record_Length): 6 (30)

                Offset_to_Point_Data: 1110

                Number_of_Variable_Length_Records: 1

                Number_of_Point_Records: 15065694

                Number_of_Points_by_Return[1]: 12314578

                Number_of_Points_by_Return[2]: 2003213

                Number_of_Points_by_Return[3]: 593094

                Number_of_Points_by_Return[4]: 132751

                Number_of_Points_by_Return[5]: 19943

                Number_of_Points_by_Return[6]: 1990

                Number_of_Points_by_Return[7]: 125

                Number_of_Points_by_Return[8]: 0

                Number_of_Points_by_Return[9]: 0

                Number_of_Points_by_Return[10]: 0

                Number_of_Points_by_Return[11]: 0

                Number_of_Points_by_Return[12]: 0

                Number_of_Points_by_Return[13]: 0

                Number_of_Points_by_Return[14]: 0

                Number_of_Points_by_Return[15]: 0

                Scale_factor: [0.00100000, 0.00100000, 0.00100000]

                Offset:       [670000.00000000, 4860000.00000000, 0.00000000]

                Min:          [665617.13400000, 4862452.69200000, 29.52800000]

                Max:          [669653.85800000, 4864691.66000000, 344.48800000]

                Start_of_Waveform_Data_Packet_Record: 0

                Start_of_First_Extended_Variable_Length_Record: 0

                Number_of_Extended_Variable_Length_Records: 0

                Min GPS Time: 66203609.600036

                Max GPS Time: 66203674.063188

                Time Offset: 1250 x 10e6

Variable Length Record #0:

                Reserved: 0

                User_ID: LASF_Projection

                Record_ID: 2112

                Record_Length_After_Header: 663

                Description:

CRS VLR Info:

PROJCS["WGS 84 / UTM zone 17N",GEOGCS["WGS 84",DATUM["wgs_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9102"]],AXIS["Geodetic longitude",EAST],AXIS["Geodetic latitude",NORTH],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["latitude_of_origin",0],UNIT["Meter",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","32617"]]

Extra Bytes Info:

                No Extra Bytes VLR!

Classification Lookup Info:

                No Classification Lookup!

Area Description Info:

                No Area Description!

                Reading Points . . . Done!

Field Stats [Point Format  6]:

                Global_X:

                                MIN = 665617.134000

                                MAX = 669653.858000

                                RNG = 4036.724000

                                MED = 667725.527500

                                AVG = 667676.633374

                                STD = 1088.787639

                Global_Y:

                                MIN = 4862452.692000

                                MAX = 4864691.660000

                                RNG = 2238.968000

                                MED = 4863545.233000

                                AVG = 4863553.339884

                                STD = 494.936983

                Global_Z:

                                MIN = 29.528000

                                MAX = 344.488000

                                RNG = 314.960000

                                MED = 86.278000

                                AVG = 86.567812

                                STD = 7.229348

                Intensity:

                                MIN = 16

                                MAX = 63008

                                RNG = 62992

                                MED = 1120

                                AVG = 1388.001364

                                STD = 1193.015666

                Return_Number:

                                MIN = 1

                                MAX = 7

                                RNG = 6

                                MED = 1

                                AVG = 1.244139

                                STD = 0.578718

                Number_of_Returns:

                                MIN = 1

                                MAX = 7

                                RNG = 6

                                MED = 1

                                AVG = 1.488278

                                STD = 0.837257

                Scan_Direction_Flag:

                                MIN = 0

                                MAX = 1

                                RNG = 1

                                MED = 1

                                AVG = 0.500466

                                STD = 0.500000

                Edge_of_Flight_Line:

                                MIN = 0

                                MAX = 1

                                RNG = 1

                                MED = 0

                                AVG = 0.000411

                                STD = 0.020274

                Classification_Flags_Synthetic:

                                Unpopulated (all zeros)

                Classification_Flags_KeyPoint:

                                Unpopulated (all zeros)

                Classification_Flags_Withheld:

                                Unpopulated (all zeros)

                Classification_Flags_Overlap:

                                Unpopulated (all zeros)

                Scanner_Channel:

                                Unpopulated (all zeros)

                Classification:

                                Unpopulated (all zeros)

                Scan_Angle:

                                MIN = -31.686001

                                MAX = 31.566000

                                RNG = 63.252001

                                MED = -0.564000

                                AVG = -0.209137

                                STD = 18.928029

                User_Data:

                                Unpopulated (all zeros)

                Point_Source_ID:

                                MIN = 811

                                MAX = 811

                                RNG = 0

                                MED = 811

                                AVG = 811.000000

                                STD = 0.000000

                Standard_GPS_Time:

                                MIN = 1316203609.600036

                                MAX = 1316203674.063188

                                RNG = 64.463152

                                MED = 1316203643.578557

                                AVG = 1316203642.795510

                                STD = 18.748037

Show Point ID (-1 to skip): 0

Point #0:

                Global_X: 665780.754000

                Global_Y: 4864347.652000

                Global_Z: 79.195000

                Standard_GPS_Time: 1316203609.6000361443

                X: -4219246

                Y: 4347652

                Z: 79195

                Intensity: 2992

                Return_Number: 1

                Number_of_Returns: 1

                Classification_Flags_Synthetic: not set

                Classification_Flags_KeyPoint: not set

                Classification_Flags_Withheld: not set

                Classification_Flags_Overlap: not set

                Scanner_Channel: 0

                Scan_Direction_Flag: 0

                Edge_of_Flight_Line: 0

                Classification: 0

                Scan_Angle: -0.270000

                User_Data: 0

                Point_Source_ID: 811

                GPS_Time: 66203609.600036

Show Point ID (-1 to skip): 1

Point #1:

                Global_X: 665780.617000

                Global_Y: 4864347.371000

                Global_Z: 79.173000

                Standard_GPS_Time: 1316203609.6000413895

                X: -4219383

                Y: 4347371

                Z: 79173

                Intensity: 2720

                Return_Number: 1

                Number_of_Returns: 1

                Classification_Flags_Synthetic: not set

                Classification_Flags_KeyPoint: not set

                Classification_Flags_Withheld: not set

                Classification_Flags_Overlap: not set

                Scanner_Channel: 0

                Scan_Direction_Flag: 0

                Edge_of_Flight_Line: 0

                Classification: 0

                Scan_Angle: -0.300000

                User_Data: 0

                Point_Source_ID: 811

                GPS_Time: 66203609.600041

Show Point ID (-1 to skip): -1

All Done!

Mr. Matthew S. Bethel, GISP
3 days ago

I replaced the LAS 1.5 file that had the same start and end times with one that has valid start and end times.

Erzhuo Che
9 days ago

Thanks Matt, the file you uploaded appears not to have the time stamps populated properly. Min and Max for GPS Time are exactly the same (1.84467e+19). And the time stamp for each point record is the same with this invalid value as well. I checked it with both EZDATAMD/EZLAS software and LASTOOLS/lasvalidate64.  

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