GeoTiles.nl

Map - Town index - Tile index


Relevant towns and neighbourhoods

Dronten (woonkern)

Tile 20HZ1

Actueel Hoogtebestand Nederland

Point cloud

The aerial photograph closest to the acquisition date of the AHN iteration was overlaid on the point cloud to produce a colored version for visualisation purposes. Furthermore, for each point cloud a spatial index and textual summary, including elevation histogram, are provided. Please note that the images are not from the same flight, and may be years off. Therefore, small alignment errors and differences occur between them.

Zoom in on the map to see tiled versions (25 tiles of 1×1.25 km). Tiled versions typically fit into memory (RAM) are easier to handle and are especially suitable for parallel processing and Machine Learning.

Version Point cloud Spatial index Info License
AHN1 Ground 20hz1.laz.zip 8.7 MiB1 20hz1.lax 17 kiB 20hz1.txt 4 kiB Stuurgroep AHN, public domain
Non-ground 20hz1.laz.zip 366 kiB1 20hz1.lax 47 kiB 20hz1.txt 9 kiB Stuurgroep AHN, public domain
Merged 20HZ1.LAZ 9.1 MiB 20HZ1.LAX 20 kiB 20HZ1.txt 10 kiB Stuurgroep AHN (merged product by GeoTiles.nl)
Colored Available for sub-units only, zoom in to select. Remixed by GeoTiles.nl
AHN2 Ground g20hz1.laz.zip 506.9 MiB1 g20hz1.lax 529 kiB g20hz1.txt 4 kiB Stuurgroep AHN, public domain
Non-ground u20hz1.laz.zip 448.6 MiB1 u20hz1.lax 414 kiB u20hz1.txt 29 kiB Stuurgroep AHN, public domain
Merged 20HZ1.LAZ 955.5 MiB 20HZ1.LAX 2.0 MiB 20HZ1.txt 29 kiB Stuurgroep AHN (merged product by GeoTiles.nl)
Colored Available for sub-units only, zoom in to select. Remixed by GeoTiles.nl
AHN3 Original C_20HZ1.LAZ 1.6 GiB C_20HZ1.LAX 1.7 MiB C_20HZ1.txt 28 kiB Stuurgroep AHN, public domain
Colored Available for sub-units only, zoom in to select. Remixed by GeoTiles.nl
AHN4 Original C_20HZ1.LAZ 4.7 GiB C_20HZ1.LAX 2.1 MiB C_20HZ1.txt 30 kiB Het Waterschapshuis, public domain
Colored (Partially) available for sub-units. Remixed by GeoTiles.nl

1Size of the .laz file, contained in the archive.

2The point cloud is in the public domain and the aerial photograph available under CC-BY. However, the colored point cloud is a new product created by GeoTiles.nl.

File checksums (md5) are available for AHN1, AHN2 and AHN3.

Raster

Version DSM DTM ('maaiveld') License
5 meter ½ meter 5 meter ½ meter
AHN1 20hz1.tif.zip public domain
AHN2 r20hz1.tif.zip ahn2_5_20hz1.tif.zip i20hz1.tif.zip public domain *
AHN3 R5_20HZ1.ZIP R_20HZ1.ZIP M5_20HZ1.ZIP M_20HZ1.ZIP CC-0
AHN4 R5_20HZ1.zip R_20HZ1.zip M5_20HZ1.zip M_20HZ1.zip CC-0 [1, 2, 3, 4]

InSAR

Orbit CSV License
Ascending, 015
Ascending, 088 20HZ1.csv.xz 1.2 MiB 20HZ1.csv Rijkswaterstaat, CC-0
Ascending, 161
Descending, 037 20HZ1.csv.xz 1.4 MiB 20HZ1.csv Rijkswaterstaat, CC-0
Descending, 110 20HZ1.csv.xz 1.1 MiB 20HZ1.csv Rijkswaterstaat, CC-0
Descending, 139

Official documentation is only available in Dutch. Malformed rows, that do not adhere to the format as specified in the documentation, were removed from the data.

Data is compressed with xz-compression. Tools like Pandas are able to read those files transparently. Users of other tools may wish to decompress the files first. Windows users may use 7-Zip, Linux users are likely to have the unxz command available on their machine already.Uncompressed, equivalent, archives are hosted by Rijkswaterstaat.

Aerial photograph

Year Version GeoTiff Source License
2016 RGB RGB_20HZ1.tiff 64.5 MiB Beeldmateriaal, nlextract.nl CC-BY 4.0
CIR CIR_20HZ1.tiff 61.7 MiB CC-BY 4.0
2017 RGB RGB_20HZ1.tiff 54.8 MiB Beeldmateriaal, nlextract.nl CC-BY 4.0
CIR CIR_20HZ1.tiff 54.0 MiB CC-BY 4.0
2018 RGB RGB_20HZ1.tiff 55.6 MiB Beeldmateriaal, nlextract.nl CC-BY 4.0
CIR CIR_20HZ1.tiff 54.9 MiB CC-BY 4.0
2019 RGB RGB_20HZ1.tiff 49.7 MiB Beeldmateriaal CC-BY 4.0
CIR CIR_20HZ1.tiff 46.0 MiB CC-BY 4.0
2020 RGB RGB_20HZ1.tiff 43.3 MiB Beeldmateriaal CC-BY 4.0
CIR CIR_20HZ1.tiff 41.0 MiB CC-BY 4.0

Sub-tiles 20HZ1

Image adapted from OpenTopo.

Actueel Hoogtebestand Nederland

Point cloud

These sub-tiles of 1×1.25 km are clipped from the original point cloud. Goal is to enable distributed processing of the point cloud. Therefore, a 25 m overlap to the neighbouring (sub-)tiles is added. Thanks to the overlap between sub-tiles, the sub-tiles can be processed independently and therefore parallel.

All other data sets on this website are only available in the main tiling schema.

Tile Version Point cloud Spatial index Info Residential areas License
20HZ1_01 AHN1 20HZ1_01.LAZ 878 kiB 20HZ1_01.LAX 3 kiB 20HZ1_01.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_01.LAZ 80.8 MiB 20HZ1_01.LAX 98 kiB 20HZ1_01.txt 30 kiB
AHN3 20HZ1_01.LAZ 88.2 MiB 20HZ1_01.LAX 80 kiB 20HZ1_01.txt 25 kiB
AHN4 20HZ1_01.LAZ 185.7 MiB 20HZ1_01.LAX 100 kiB 20HZ1_01.txt 30 kiB
20HZ1_02 AHN1 20HZ1_02.LAZ 801 kiB 20HZ1_02.LAX 3 kiB 20HZ1_02.txt 9 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_02.LAZ 77.9 MiB 20HZ1_02.LAX 98 kiB 20HZ1_02.txt 28 kiB
AHN3 20HZ1_02.LAZ 88.1 MiB 20HZ1_02.LAX 75 kiB 20HZ1_02.txt 26 kiB
AHN4 20HZ1_02.LAZ 185.5 MiB 20HZ1_02.LAX 100 kiB 20HZ1_02.txt 29 kiB
20HZ1_03 AHN1 20HZ1_03.LAZ 801 kiB 20HZ1_03.LAX 4 kiB 20HZ1_03.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_03.LAZ 85.5 MiB 20HZ1_03.LAX 99 kiB 20HZ1_03.txt 27 kiB
AHN3 20HZ1_03.LAZ 88.8 MiB 20HZ1_03.LAX 73 kiB 20HZ1_03.txt 27 kiB
AHN4 20HZ1_03.LAZ 212.8 MiB 20HZ1_03.LAX 100 kiB 20HZ1_03.txt 30 kiB
20HZ1_04 AHN1 20HZ1_04.LAZ 800 kiB 20HZ1_04.LAX 4 kiB 20HZ1_04.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_04.LAZ 80.4 MiB 20HZ1_04.LAX 99 kiB 20HZ1_04.txt 29 kiB
AHN3 20HZ1_04.LAZ 89.4 MiB 20HZ1_04.LAX 79 kiB 20HZ1_04.txt 28 kiB
AHN4 20HZ1_04.LAZ 316.0 MiB 20HZ1_04.LAX 100 kiB 20HZ1_04.txt 31 kiB
20HZ1_05 AHN1 20HZ1_05.LAZ 771 kiB 20HZ1_05.LAX 4 kiB 20HZ1_05.txt 7 kiB Dronten AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_05.LAZ 74.2 MiB 20HZ1_05.LAX 97 kiB 20HZ1_05.txt 25 kiB
AHN3 20HZ1_05.LAZ 81.5 MiB 20HZ1_05.LAX 72 kiB 20HZ1_05.txt 23 kiB
AHN4 20HZ1_05.LAZ 206.5 MiB 20HZ1_05.LAX 100 kiB 20HZ1_05.txt 29 kiB
20HZ1_06 AHN1 20HZ1_06.LAZ 652 kiB 20HZ1_06.LAX 3 kiB 20HZ1_06.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_06.LAZ 78.5 MiB 20HZ1_06.LAX 99 kiB 20HZ1_06.txt 9 kiB
AHN3 20HZ1_06.LAZ 87.4 MiB 20HZ1_06.LAX 78 kiB 20HZ1_06.txt 10 kiB
AHN4 20HZ1_06.LAZ 182.2 MiB 20HZ1_06.LAX 100 kiB 20HZ1_06.txt 12 kiB
20HZ1_07 AHN1 20HZ1_07.LAZ 649 kiB 20HZ1_07.LAX 3 kiB 20HZ1_07.txt 9 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_07.LAZ 75.7 MiB 20HZ1_07.LAX 98 kiB 20HZ1_07.txt 9 kiB
AHN3 20HZ1_07.LAZ 87.2 MiB 20HZ1_07.LAX 75 kiB 20HZ1_07.txt 10 kiB
AHN4 20HZ1_07.LAZ 178.9 MiB 20HZ1_07.LAX 100 kiB 20HZ1_07.txt 11 kiB
20HZ1_08 AHN1 20HZ1_08.LAZ 686 kiB 20HZ1_08.LAX 4 kiB 20HZ1_08.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_08.LAZ 75.2 MiB 20HZ1_08.LAX 98 kiB 20HZ1_08.txt 10 kiB
AHN3 20HZ1_08.LAZ 87.3 MiB 20HZ1_08.LAX 79 kiB 20HZ1_08.txt 10 kiB
AHN4 20HZ1_08.LAZ 178.0 MiB 20HZ1_08.LAX 100 kiB 20HZ1_08.txt 12 kiB
20HZ1_09 AHN1 20HZ1_09.LAZ 660 kiB 20HZ1_09.LAX 3 kiB 20HZ1_09.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_09.LAZ 77.9 MiB 20HZ1_09.LAX 99 kiB 20HZ1_09.txt 9 kiB
AHN3 20HZ1_09.LAZ 89.7 MiB 20HZ1_09.LAX 78 kiB 20HZ1_09.txt 10 kiB
AHN4 20HZ1_09.LAZ 301.2 MiB 20HZ1_09.LAX 100 kiB 20HZ1_09.txt 12 kiB
20HZ1_10 AHN1 20HZ1_10.LAZ 754 kiB 20HZ1_10.LAX 4 kiB 20HZ1_10.txt 11 kiB Dronten AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_10.LAZ 108.3 MiB 20HZ1_10.LAX 99 kiB 20HZ1_10.txt 14 kiB
AHN3 20HZ1_10.LAZ 118.8 MiB 20HZ1_10.LAX 75 kiB 20HZ1_10.txt 14 kiB
AHN4 20HZ1_10.LAZ 329.4 MiB 20HZ1_10.LAX 100 kiB 20HZ1_10.txt 16 kiB
20HZ1_11 AHN1 20HZ1_11.LAZ 586 kiB 20HZ1_11.LAX 3 kiB 20HZ1_11.txt 9 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_11.LAZ 79.9 MiB 20HZ1_11.LAX 98 kiB 20HZ1_11.txt 15 kiB
AHN3 20HZ1_11.LAZ 93.2 MiB 20HZ1_11.LAX 80 kiB 20HZ1_11.txt 15 kiB
AHN4 20HZ1_11.LAZ 182.6 MiB 20HZ1_11.LAX 100 kiB 20HZ1_11.txt 16 kiB
20HZ1_12 AHN1 20HZ1_12.LAZ 632 kiB 20HZ1_12.LAX 3 kiB 20HZ1_12.txt 10 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_12.LAZ 80.9 MiB 20HZ1_12.LAX 95 kiB 20HZ1_12.txt 15 kiB
AHN3 20HZ1_12.LAZ 98.7 MiB 20HZ1_12.LAX 79 kiB 20HZ1_12.txt 15 kiB
AHN4 20HZ1_12.LAZ 202.4 MiB 20HZ1_12.LAX 100 kiB 20HZ1_12.txt 17 kiB
20HZ1_13 AHN1 20HZ1_13.LAZ 604 kiB 20HZ1_13.LAX 4 kiB 20HZ1_13.txt 11 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_13.LAZ 104.9 MiB 20HZ1_13.LAX 99 kiB 20HZ1_13.txt 15 kiB
AHN3 20HZ1_13.LAZ 115.0 MiB 20HZ1_13.LAX 77 kiB 20HZ1_13.txt 15 kiB
AHN4 20HZ1_13.LAZ 254.6 MiB 20HZ1_13.LAX 100 kiB 20HZ1_13.txt 17 kiB
20HZ1_14 AHN1 20HZ1_14.LAZ 599 kiB 20HZ1_14.LAX 4 kiB 20HZ1_14.txt 10 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_14.LAZ 98.3 MiB 20HZ1_14.LAX 98 kiB 20HZ1_14.txt 23 kiB
AHN3 20HZ1_14.LAZ 107.4 MiB 20HZ1_14.LAX 73 kiB 20HZ1_14.txt 15 kiB
AHN4 20HZ1_14.LAZ 356.5 MiB 20HZ1_14.LAX 100 kiB 20HZ1_14.txt 17 kiB
20HZ1_15 AHN1 20HZ1_15.LAZ 720 kiB 20HZ1_15.LAX 4 kiB 20HZ1_15.txt 11 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_15.LAZ 127.9 MiB 20HZ1_15.LAX 99 kiB 20HZ1_15.txt 15 kiB
AHN3 20HZ1_15.LAZ 146.4 MiB 20HZ1_15.LAX 88 kiB 20HZ1_15.txt 15 kiB
AHN4 20HZ1_15.LAZ 471.9 MiB 20HZ1_15.LAX 100 kiB 20HZ1_15.txt 17 kiB
20HZ1_16 AHN1 20HZ1_16.LAZ 768 kiB 20HZ1_16.LAX 4 kiB 20HZ1_16.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_16.LAZ 76.7 MiB 20HZ1_16.LAX 100 kiB 20HZ1_16.txt 10 kiB
AHN3 20HZ1_16.LAZ 101.7 MiB 20HZ1_16.LAX 84 kiB 20HZ1_16.txt 10 kiB
AHN4 20HZ1_16.LAZ 186.2 MiB 20HZ1_16.LAX 100 kiB 20HZ1_16.txt 12 kiB
20HZ1_17 AHN1 20HZ1_17.LAZ 817 kiB 20HZ1_17.LAX 4 kiB 20HZ1_17.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_17.LAZ 75.5 MiB 20HZ1_17.LAX 99 kiB 20HZ1_17.txt 10 kiB
AHN3 20HZ1_17.LAZ 83.2 MiB 20HZ1_17.LAX 75 kiB 20HZ1_17.txt 10 kiB
AHN4 20HZ1_17.LAZ 189.8 MiB 20HZ1_17.LAX 100 kiB 20HZ1_17.txt 12 kiB
20HZ1_18 AHN1 20HZ1_18.LAZ 772 kiB 20HZ1_18.LAX 4 kiB 20HZ1_18.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_18.LAZ 77.9 MiB 20HZ1_18.LAX 99 kiB 20HZ1_18.txt 10 kiB
AHN3 20HZ1_18.LAZ 86.9 MiB 20HZ1_18.LAX 73 kiB 20HZ1_18.txt 11 kiB
AHN4 20HZ1_18.LAZ 193.5 MiB 20HZ1_18.LAX 100 kiB 20HZ1_18.txt 12 kiB
20HZ1_19 AHN1 20HZ1_19.LAZ 926 kiB 20HZ1_19.LAX 4 kiB 20HZ1_19.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_19.LAZ 92.1 MiB 20HZ1_19.LAX 100 kiB 20HZ1_19.txt 10 kiB
AHN3 20HZ1_19.LAZ 107.0 MiB 20HZ1_19.LAX 86 kiB 20HZ1_19.txt 10 kiB
AHN4 20HZ1_19.LAZ 283.2 MiB 20HZ1_19.LAX 99 kiB 20HZ1_19.txt 12 kiB
20HZ1_20 AHN1 20HZ1_20.LAZ 941 kiB 20HZ1_20.LAX 4 kiB 20HZ1_20.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_20.LAZ 90.1 MiB 20HZ1_20.LAX 98 kiB 20HZ1_20.txt 11 kiB
AHN3 20HZ1_20.LAZ 108.7 MiB 20HZ1_20.LAX 84 kiB 20HZ1_20.txt 11 kiB
AHN4 20HZ1_20.LAZ 405.4 MiB 20HZ1_20.LAX 100 kiB 20HZ1_20.txt 13 kiB
20HZ1_21 AHN1 20HZ1_21.LAZ 941 kiB 20HZ1_21.LAX 4 kiB 20HZ1_21.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_21.LAZ 86.1 MiB 20HZ1_21.LAX 98 kiB 20HZ1_21.txt 9 kiB
AHN3 20HZ1_21.LAZ 120.2 MiB 20HZ1_21.LAX 87 kiB 20HZ1_21.txt 9 kiB
AHN4 20HZ1_21.LAZ 226.7 MiB 20HZ1_21.LAX 100 kiB 20HZ1_21.txt 11 kiB
20HZ1_22 AHN1 20HZ1_22.LAZ 940 kiB 20HZ1_22.LAX 4 kiB 20HZ1_22.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_22.LAZ 87.9 MiB 20HZ1_22.LAX 99 kiB 20HZ1_22.txt 9 kiB
AHN3 20HZ1_22.LAZ 122.5 MiB 20HZ1_22.LAX 87 kiB 20HZ1_22.txt 10 kiB
AHN4 20HZ1_22.LAZ 219.6 MiB 20HZ1_22.LAX 100 kiB 20HZ1_22.txt 12 kiB
20HZ1_23 AHN1 20HZ1_23.LAZ 829 kiB 20HZ1_23.LAX 4 kiB 20HZ1_23.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_23.LAZ 84.1 MiB 20HZ1_23.LAX 99 kiB 20HZ1_23.txt 10 kiB
AHN3 20HZ1_23.LAZ 93.7 MiB 20HZ1_23.LAX 82 kiB 20HZ1_23.txt 10 kiB
AHN4 20HZ1_23.LAZ 223.8 MiB 20HZ1_23.LAX 100 kiB 20HZ1_23.txt 12 kiB
20HZ1_24 AHN1 20HZ1_24.LAZ 741 kiB 20HZ1_24.LAX 3 kiB 20HZ1_24.txt 8 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_24.LAZ 82.2 MiB 20HZ1_24.LAX 99 kiB 20HZ1_24.txt 26 kiB
AHN3 20HZ1_24.LAZ 90.0 MiB 20HZ1_24.LAX 75 kiB 20HZ1_24.txt 25 kiB
AHN4 20HZ1_24.LAZ 217.8 MiB 20HZ1_24.LAX 100 kiB 20HZ1_24.txt 28 kiB
20HZ1_25 AHN1 20HZ1_25.LAZ 713 kiB 20HZ1_25.LAX 3 kiB 20HZ1_25.txt 7 kiB AHN (stuurgroep AHN, public data) and aerial photograph (Beeldmateriaal, CC-BY) remixed by GeoTiles.nl, CC-BY
AHN2 20HZ1_25.LAZ 78.8 MiB 20HZ1_25.LAX 100 kiB 20HZ1_25.txt 9 kiB
AHN3 20HZ1_25.LAZ 85.1 MiB 20HZ1_25.LAX 76 kiB 20HZ1_25.txt 10 kiB
AHN4 20HZ1_25.LAZ 356.0 MiB 20HZ1_25.LAX 100 kiB 20HZ1_25.txt 12 kiB

At the boundaries of its current availability, AHN4 is complemented with AHN3 to ensure full coverage.


No guarantee on availability, completeness, correctness or fitness for any particular purpose is implied by the distribution of or linking to this data. The license indicated with the products is to the best of my knowledge at the time of writing. Please confirm the applicable license with the source before integrating the data.