Let’s heat up some sweet, warm and spicy Glögg in celebration! They must have been good boys and girls up there in Sweden. Because “Jultomten” or simply ”Tomten” – how Sweden’s Santa Clause is called – is assuring a “God Jul” for all the Swedish LiDAR lovers this Christmas season.
Only a few weeks ago this tweet of ours had (mistakenly) included Sweden in a list of European countries that had released their national LiDAR archives as open data for public reuse over the past six years.
Turns out we were correct after all. Sweden has just opened their LiDAR data for free and unencumbered download. To get the data simply create a user account and browse to the ftp site for download as shown in the image sequence below.
Open Geodata Landing Page.
Instructions for Accessing Open Geodata.
Browsing all Open Geodata Sets
Open LiDAR Data for 2018
Downloading selected LAZ tiles
The released LiDAR data was collected with a density of 1 to 2 pulses per square meter and is distributed in LASzip compressed LAZ tiles of 2500 by 2500 meters. The returns are classified into four classes: ground (2), water (9), low noise (7) and high noise (18). All items that can not be classified as any of the first four classes coded as left unclassified (1). The LAZ files do not contain CRS information, but this can easily be added with horizontal coordinates in SWERED99 TM (EPSG code 3006) and elevations in RH2000 height (EPSG code 5613).
Below a look with lasview at a 5 km by 5 km area that composed of the four tiles ‘18P001_67100_5800_25.laz‘, ‘18P001_67100_5825_25.laz‘, ‘18P001_67125_5800_25.laz‘ and ‘18P001_67125_5825_25.laz‘ with several of the different color modes available.
Colored by classification.
Colored by elevation 70 m to 140 m.
Colored by elevation 70 m to 140 m.
Colored by return type.
Colored by flightline.
Colored by intensity.
Some more details: The data was acquired at flying altitude of around 3000 meter with a maximum scan angle of ± 20º and a minimum side overlap of 10% between the flightlines. The laser footprint on ground is below 75 centimeters with slight variation based on the flying altitude. The laser scanning survey was performed with LiDAR instruments that can provide at least three returns from the same pulse. All LiDAR returns are preserved throughout the entire production chain.
The LiDAR data comes with the incredibly Creative Commons – CC0 license, which means that you can use, disseminate, modify and build on the data – even for commercial purposes – without any restrictions. You are free to acknowledge the source when you distribute the data further, but it is not required.
The LiDAR data will eventually cover approximately 75% of Sweden and new point clouds will continuously be added as additional scanning is performed according to the schedule shown below. The survey will be returning to scan every spot again after about 7 years.

2018-2022 LiDAR acquisition plan for Sweden
Below a lasinfo report for tile ‘18P001_67125_5825_25.laz‘. One noticeable oddity is the distribution of intensities. The histogram across all intensities with bins of size 256 shows two clearly distinct sets of intensities each with their own peak and a void of values between 3000 and 10000.
lasinfo -i 18P001_67125_5825_25.laz -cd -histo intensity 256
reporting all LAS header entries:
file signature: 'LASF'
file source ID: 0
global_encoding: 1
project ID GUID data 1-4: 00000000-0000-0000-0000-000000000000
version major.minor: 1.2
system identifier: ''
generating software: 'TerraScan'
file creation day/year: 303/2018
header size: 227
offset to point data: 227
number var. length records: 0
point data format: 1
point data record length: 28
number of point records: 20670652
number of points by return: 13947228 4610837 1712043 358397 42147
scale factor x y z: 0.01 0.01 0.01
offset x y z: 0 0 0
min x y z: 582500.00 6712500.00 64.56
max x y z: 584999.99 6714999.99 136.59
LASzip compression (version 3.2r2 c2 50000): POINT10 2 GPSTIME11 2
reporting minimum and maximum for all LAS point record entries ...
X 58250000 58499999
Y 671250000 671499999
Z 6456 13659
intensity 32 61406
return_number 1 5
number_of_returns 1 5
edge_of_flight_line 0 1
scan_direction_flag 0 1
classification 1 18
scan_angle_rank -19 19
user_data 0 1
point_source_ID 1802 1804
gps_time 222241082.251248 222676871.876191
number of first returns: 13947228
number of intermediate returns: 2110980
number of last returns: 13952166
number of single returns: 9339722
covered area in square units/kilounits: 5923232/5.92
point density: all returns 3.49 last only 2.36 (per square units)
spacing: all returns 0.54 last only 0.65 (in units)
overview over number of returns of given pulse: 9339722 5797676 4058773 1263967 210514 0 0
histogram of classification of points:
10888520 unclassified (1)
9620725 ground (2)
22695 noise (7)
138147 water (9)
565 Reserved for ASPRS Definition (18)
intensity histogram with bin size 256.000000
bin [0,256) has 1753205
bin [256,512) has 3009640
bin [512,768) has 2240861
bin [768,1024) has 1970696
bin [1024,1280) has 1610647
bin [1280,1536) has 1285858
bin [1536,1792) has 974475
bin [1792,2048) has 790480
bin [2048,2304) has 996926
bin [2304,2560) has 892755
bin [2560,2816) has 164142
bin [2816,3072) has 57367
bin [3072,3328) has 18
[void]
bin [10752,11008) has 589317
bin [11008,11264) has 3760
bin [11264,11520) has 99653
bin [11520,11776) has 778739
bin [11776,12032) has 1393569
bin [12032,12288) has 1356850
bin [12288,12544) has 533202
bin [12544,12800) has 140223
bin [12800,13056) has 16195
bin [13056,13312) has 2319
bin [13312,13568) has 977
bin [13568,13824) has 765
bin [13824,14080) has 648
bin [14080,14336) has 289
bin [14336,14592) has 513
bin [14592,14848) has 383
bin [14848,15104) has 178
bin [15104,15360) has 526
bin [15360,15616) has 108
bin [15616,15872) has 263
bin [15872,16128) has 289
bin [16128,16384) has 69
bin [16384,16640) has 390
bin [16640,16896) has 51
bin [16896,17152) has 186
bin [17152,17408) has 239
bin [17408,17664) has 169
bin [17664,17920) has 58
bin [17920,18176) has 227
bin [18176,18432) has 169
bin [18432,18688) has 40
bin [18688,18944) has 401
bin [18944,19200) has 30
bin [19200,19456) has 411
bin [19456,19712) has 34
bin [19712,19968) has 34
bin [19968,20224) has 398
bin [20224,20480) has 24
bin [20480,20736) has 108
bin [20736,20992) has 267
bin [20992,21248) has 29
bin [21248,21504) has 318
bin [21504,21760) has 26
bin [21760,22016) has 59
bin [22016,22272) has 184
bin [22272,22528) has 52
bin [22528,22784) has 18
bin [22784,23040) has 116
bin [23040,23296) has 55
bin [23296,23552) has 89
bin [23552,23808) has 250
bin [23808,24064) has 24
bin [24064,24320) has 52
bin [24320,24576) has 14
bin [24576,24832) has 29
bin [24832,25088) has 71
bin [25088,25344) has 74
bin [25344,25600) has 2
bin [25600,25856) has 17
bin [25856,26112) has 2
bin [26368,26624) has 9
bin [26624,26880) has 1
bin [26880,27136) has 1
bin [27136,27392) has 1
bin [27392,27648) has 1
bin [27648,27904) has 3
bin [28416,28672) has 2
bin [29184,29440) has 4
bin [30720,30976) has 1
bin [30976,31232) has 2
bin [31232,31488) has 1
bin [32512,32768) has 1
bin [36864,37120) has 1
bin [58368,58624) has 1
bin [61184,61440) has 1
average intensity 3625.2240208968733 for 20670652 element(s)