Prikaz objav z oznako digital model relief. Pokaži vse objave
Prikaz objav z oznako digital model relief. Pokaži vse objave

torek, 11. julij 2017

Posodobitev seznama LiDAR podatkovnih baz/Update list of free LiDAR database

Tako malo več kot en mesec je preteklo od zadnje posodobitve. Sem malo zopet resno prijel za delo. Tokrat kar nekaj novosti. Norveška je izdala 1m resolucijo DTM, imamo 100% pokritost Jugozahoda Anglije, Avstralija je izdala v zadnjih letih v 1m in 2m resoluciji.

Dodal sem tudi link do portala OpenTopography, kjer najdete lahko veliko zanimivih stvari! Priporočam registracijo, saj so datoteke, ki jih lahko prenesete s tem večje....večje površine.
Link do seznama
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One month later and new update. Some really interesting updates, for English users must check is 100% coverage of South West. Also new datasets of Malta, Norway and Australia.

I also added link to portal OpenTopography where you can access a lot of different LiDAR projects data around the World. I recommend registration as you can download bigger areas.
Link to list page

torek, 8. november 2016

List of freely accessible LiDAR data and digital terrain models

 THIS LIST IS NOT UPDATED ANYMORE. I MOVED IT TO THIS SITE https://arheologijaslovenija.blogspot.co.uk/p/blog-page_81.html

Surveying surface of the Earth with LiDAR technology is increasing, thereby the database of LiDAR data is constantly increasing.


And some databases are openly available on the internet. In the vast majority of a LiDAR surveys were and are undertaken by various government agencies of various countries around the world. Openly available LiDAR data in available in different formats, coordinate systems and state of processing (from the cleaned point cloud data to the digital terrain model of the ground).


On the internet you can find many different lists of digital terrain models of ground (DTM) and LiDAR data recording, but almost all receive an irregular update and are therefore deficient.

I encourage people to try different LiDAR data to try something new. In addition to new technical GIS knowledge you will gain it is also fun to discover new archaeological sites or view the famous archaeological sites from LiDAR “view” in other countries.

Conditions for making to the list are:
  • free access to files
  • files are already classified lidar data (files with the extension .LAS, .LAZ, .zLAS, .ASC, .XYZ)
  • a digital terrain model of resolution 5m or less (files with the extension .GeoTIFF, .ASC, .IMAGE, .DEM)
I will mark when .ASC is point cloud and when raster.


!When ftp server is available use of ftp client is recommended. Here is guide how to setup open-source ftp client  FileZilla.

I will check list monthly and update it regularly.

If you have any trouble getting data from internet sites on this list, leave a message on the comments and I'll help.

If you know the source I missed or it is brand new, leave a message in the comments and I'll be happy to check it in and add it to the list.


Europe
Country Region/City/State Format CRS/Koordinatni sistem Particularities
Austria Wien GeoTIFF EPSG:31256
Belgium Wallonia GeoTIFF EPSG:31370 Click on bold link Downloaden and pick file
Denmark GeoTIFF EPSG:25832 Free registration needed
England ASCII-raster EPSG:27700
Finland LAZ EPSG:3067 In datasets search LiDAR
Germany North Rhine-Westphalia XZY-points EPSG:25832 Under DGM folder you can select DTM files
Germany Thuringia XZY/LAZ EPSG:25832 Search for place name and then click it to select 1x1km big quadrant
Italy Bolzano, South Tyrol GeoTIFF EPSG:3044
Italy Friuli-Venezia ASCII-raster EPSG:3044 On right side search places
Italy Trentino ASCII-raster EPSG:4326 In the top row, click the icon cursor pointing to the cube
Spain Basque LAS EPSG:25830
Luxemburg ASCII EPSG:2169 Whole countrie in one file
Netherland GeoTIFF/LAZ EPSG:28992 AHN3 dataset
Netherland GeoTIFF EPSG:28992 AHN2 dataset
Northern Ireland ASCII-raster EPSG:29901 Check coverage map.
Scotland ASCII-raster EPSG:27700 Pick resolution, then under data resources click link. One big file.
Slovenia zLAS/LAZ EPSG:25830
Spain LAZ EPSG:4258 Under municipio search place or municipy
Spain Catalonia LAZ EPSG:25830
Spain La Rioja LAZ/GeoTIFF EPSG:25830 Click on cartgrafia tematica and search lidar or modelo digital
Switzerland Solothurn canton LAZ/GeoTIFF EPSG:21781
Switzerland Zurich canton LAZ/GeoTIFF EPSG:2056 In maps menu seek LiDAR
Wales ASCII-raster EPSG:27700


North America
Country Region/City/State Format CRS Particularities
ZDA Indiana LAS/IMAGE-raster EPSG:2965/2966 In datasets the LiDAR in DEM files are under IndianaMap Data
ZDA Kentucky LAZ/IMAGE-raster USER defined Search LiDAR, select LiDAR or DTM, then click link to go to ftp server
ZDA Louisiana XZY/DEM-raster EPSG:26915
ZDA Minnesota LAZ See each dataset Search by counties/ftp access
ZDA North Dakota LAS/XYZ/IMAGE-raster/ASCII-raster EPSG:26914
ZDA Ohio LAS/ASCII-raster EPSG:32122
ZDA Washington LAS/XYZ/IMAGE-raster/ASCII-raster EPSG:Custom-is written in files With tool for select region choose region and then choose data for download


Latin America and Caribbean
Country Region/City/State Format CRS Particularities
Haiti LAS/ASCII-raster EPSG:3857


Oceania
Country Region/City/State Format CRS Particularities
New Zealand LAZ/ASCII-points/GeoTIFF EPSG:2193 Click on wanted data set. Then click on Point cloud data. On next page use select region and then choose format of data for download

nedelja, 6. november 2016

Seznam prosto dostopnih podatkov lidarskega snemanja in digitalnih modelov reliefa tal

 TA BLOG ZAPIS NI VEČ AKTUALEN. PRESTAVLJENO NA STRAN https://arheologijaslovenija.blogspot.co.uk/p/blog-page_76.html

Snemanja zemeljskega površja s LiDAR tehnologijo se vedno bolj razširjajo, s tem pa se povečuje tudi baza lidarskih podatkov.

In kar nekaj jih je prosto dostopna na internetu. V veliki večini gre za podatkovne baze lidarskih snemanj, ki so jih opravile različne državne agencije posameznih držav po celem svetu. Dostopni podatki so v različnih formatih, koordinatnih sistemih in stanjih obdelave (od celostnih podatkov do digitalnega modela reliefa tal).


Na spletu kroži veliko raznih seznamov digitalnih modelov reliefa tal in podatkov lidarskega snemanja, a so skoraj vsi deležni nerednega posodabljanja in zato pomanjkljivi.

Poleg novega tehničnega GIS znanja, ki ga s tem pridobimo, se je zabavno podati v druge države in tam odkrivati nova arheološka najdišča ali pa si ogledati znana arheološka najdišča iz lidarskega pogleda.

Pogoji za uvrstitev na seznam so, da:
  • je omogočen prost dostop do podatkov
  • so klasificirani lidarski podatki/točkovni oblak (datoteke s končnico .LAS, .LAZ, .zLAS, .ASC, .XYZ)
  • ima digitalni model reliefa resolucijo 5m ali manj (datoteke s končnico .GeoTIFF, .ASC, .IMAGE, .DEM)
Ker so v formatu .ASC lahko zapisane tako točkovni oblak ali pa raster tal, je poleg formata opredeljeno za kaj gre.

!Ko je dostop omogočen preko ftp je priporočena uporaba ftp programa! Navodila, kako namestiti in uporabljati odprtokodni ftp program FileZilla.

Seznam bom mesečno preverjal in posodabljal.

Če imate kakršne koli težave pridobivanja podatkov iz internetnih strani na seznamu pustite sporočilo pod komentarji in bom pomagal.

Če poznate še kakšen vir, pustite sporočilo v komentarjih in z veseljem bom preveril in dodal na seznam.


Evropa
Država Regija/Mesto/Pokrajina Format CRS/Koordinatni sistem Posebnosti
Anglija ASCII-raster EPSG:27700
Avstrija Dunaj GeoTIFF EPSG:31256
Belgija Valonija GeoTIFF EPSG:31370 Klikni na link z odebeljenim Downloaden in izberi datoteko
Danska GeoTIFF EPSG:25832 Potrebna brezplačna registracija
Finska LAZ EPSG:3067 Med dataseti išči LiDAR
Italija Bolzano, Južna Tirolska GeoTIFF EPSG:3044
Italija Furlanija Julijska krajina ASCII-raster EPSG:3044 Desno v meniju išči kraj
Italija Trentino ASCII-raster EPSG:4326 V zgornji vrstici klikni ikono kursorja ki kaže na kocko
Luxemburg ASCII EPSG:2169 Cela država v enem kosu
Nemčija Severno Porenje-Vestfalija XZY-points EPSG:25832 Pod DGM se nahajajo datoteke modela reliefa tal
Nemčija Turingija XZY/LAZ EPSG:25832 Išči kraj in klikni na kvadrat za prenos
Nizozemska GeoTIFF/LAZ EPSG:28992 AHN3 dataset
Nizozemska GeoTIFF EPSG:28992 AHN2 dataset
Severna Irska ASCII-raster EPSG:29901 Poglej karto pokritosti.
Slovenija zLAS/LAZ EPSG:25830
Škotska ASCII-raster EPSG:27700 Izberi ločljivost, nato pod data resources klikni link.
Španija LAZ EPSG:4258 Pod municipio išči po kraju
Španija Baskija LAS EPSG:25830
Španija Katalonija LAZ EPSG:25830
Španija La Rioja LAZ/GeoTIFF EPSG:25830 Klikni na cartgrafia tematica in iščici lidar ali pa modelo digital
Švica Solothurn kanton LAZ/GeoTIFF EPSG:21781
Švica Zurich kanton LAZ/GeoTIFF EPSG:2056 Med kartami išči LiDAR
Wales ASCII-raster EPSG:27700


Severna Amerika
Država Regija/Mesto/Zvezna država Format CRS/Koordinatni sistem Posebnosti
ZDA Indiana LAS/IMAGE-raster EPSG:2965/2966 Med dataseti je LiDAR in DEM pod IndianaMap Data
ZDA Kentucky LAZ/IMAGE-raster USER defined Išči LiDAR, nato izberi in klikni link, ki ti odpre ftp
ZDA Louisiana XZY/DEM-raster EPSG:26915
ZDA Minnesota LAZ Odvisno od dataseta Išči po posameznih pokrajinah/ftp dostop
ZDA Ohio LAS/ASCII-raster EPSG:32122
ZDA Severna Dakota LAS/XYZ/IMAGE-raster/ASCII-raster EPSG:26914
ZDA Washington LAS/XYZ/IMAGE-raster/ASCII-raster EPSG:Custom-je zapisan v datotekah Z orodjem za izbiro območja )tretja ikona la levi strani= izberi območje in nato željene podatke


Srednja Amerika in Karibi
Država Regija/Mesto/Zvezna država Format CRS/Koordinatni sistem Posebnosti
Haiti LAS/ASCII-raster EPSG:3857


Oceanija
Država Regija/Mesto/Zvezna država Format CRS/Koordinatni sistem Posebnosti
Nova Zelandija LAZ/ASCII-points/GeoTIFF EPSG:2193 Klikni na željen dataset. Klikni na Point cloud data. Tam z select region izberi področje in nato format podatkov

sreda, 3. avgust 2016

#FridayLiDAR

In the beginning of my Twitter activity not so long ago, @MarkusZevnik suggested me a hashtag #FridayLiDAR when I started to post every Friday a LiDAR visualizations of interesting archaeological sites and landscapes.
Hillfort Žuškovka - #FridayLidar of 07.08.2016
Since in March 2016 I have managed to post quite a collection of a very interesting archaeological sites and landscapes. In this blog post I decided that i will make a list every now and then of all published #FridayLiDAR tweets. 

Why LiDAR every week? 

In Slovenia, we have publicly available data LiDAR recording for the total area of ​​the country. This allows us a view of the shape of the surface, even where there is a forest ... and in Slovenia we have over 60% of land covered with forest.

LiDAR imagery reveal many new and unknown archeological sites. From better visible already known archaeological traces and sites to completely newly discovered and almost completely preserved archaeological landscapes and sites.

With LiDAR we have possibility to display in very easy and attractive way shape of landscapes and archaeological sites to the general public.

 I also publish a LiDAR imagery of archaeological sites from other countries. Thus, in addition to Slovenia also from the UK, Finland and Italy. I have in plan few other countries...expect some surprise.

03/18/2016 - LiDAR imagery of an prehistoric hillfort Cvinger near Vir pri Stični/Slovenia. 

04/01/2016 - LiDAR imagery of prehistoric and late Roman hillfort Ajdovščina in Brkini/Slovenia. 

08/04/2016 - LiDAR imagery of iron age hillfort Ivigton Camp in Herefordshire/UK.

 04/15/2016 - LiDAR imagery of prehistoric and late Roman hillfort and the medieval castle Šilentabor near Pivka/Slovenia.


Šilentabor #FridayLiDAR of 15.04.2016
04/22/2016 - LiDAR imagery of an hillfort V Lazu and in the surroundings pre-medieval field boundaries/Slovenia. 

04/29/2016 - LiDAR imagery of pre-medieval field boundaries and possible plain settlement near village Vrhpolje-Kozina/Slovenia. 

06/05/2016 - LiDAR imagery of pre-medieval field boundaries and possible plain settlement near village of ​​Škocjan - Divača/Slovenia. 

05/13/2016 -LiDAR imagery of an prehistoric hillfort in the village of Gradina Kosovelje in Karst/Slovenia.

 05/20/2016 - LiDAR imagery of an prehistoric hillfort in the village of Birth Zagradec in Karst/Slovenia. 

05/27/2016 - LiDAR recording of one the best preserved prehistoric hill forts in the Karst, Vahta in the village of Kazlje/Slovenia. 

06/10/2016 - LiDAR imagery of an prehistoric hillfort Tabor near Vrabče and surrounding pre-medieval field boundaries/Slovenia.

 06/17/2016 -  LiDAR imagery of an prehistoric hillfort Debela Griža pri Kozini/Slovenia. 

06/24/2016 - LiDAR imagery of two prehistoric hillforts above Newcastle-on-Clun in Shropshire / United Kingdom.

Two prehistoric hill forts above Newcastle-on-Clun #FridayLiDAR of 06.24.2016
07/01/2016 - LiDAR imagery of an prehistoric hillfort Rapola/Finland. 

08/07/2016 - LiDAR imagery of an prehistoric hillfort Žuškovka near village Laže-Senožeče/Slovenia.

07/15/2016 -
LiDAR imagery of the early Roman military camp near Gročana/Italy. 

07/22/2016 - LiDAR imagery of the wider surroundings of Newcastle-on-Clun in Shropshire. Transcription of prehistoric hillforts, burial mounds and the early medieval dikes/Great Britain. 

07/29/2016 - LiDAR imagenry and transcription of archaeological traces pre-medieval field boundaries plain settlement in near village Naklo near Divača/Slovenia.