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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
16 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
16 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
22 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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