General information

Digital orthophoto is very popular and frequently applied among GIS users. It became popular as the basic information layer while using modern GIS technologies. Digital orthophoto is a perspective choice for full GIS development as the price for computer disc memory is reducing and computer turn arounds becoming faster.

Data

Digital Raster Orthophotographic Map of Settlements ORT5LT at scale 1:5000 was produced in 2006 on the background of aerial photography of 2005. ORT5LT is produced for 94 settlements or in 420 map sheets devided according to the National map sheet division scheme at scale 1:5000 and numbered in LKS-94 system.

During the process of orthophotographic map production, information of aerial photography is geometrically corrected by minimizing deformation errors of location down to possible minimum. ORT5LT raster data resolution is 0.25 m on ground.

Content

Name of Settlements	Map sheets	Name of Settlements	Map sheets
Akmenė	4	Panemunė	2
Anykščiai	4	Pasvalys	9
Ariogala	4	Plungė	4
Baltoji Vokė	2	Priekulė	1
Birštonas	7	Prienai	2
Biržai	7	Radviliškis	7
Daugai	4	Ramygala	3
Druskininkai	10	Raseiniai	4
Dūkštas	4	Rietavas	2
Dusetos	2	Rokiškis	5
Eišiškės	4	Rūdiškės	2
Elektrėnai	4	Rusnė	4
Ežerėlis	2	Salantai	1
Gargždai	2	Seda	2
Garliava	2	Simnas	4
Gelgaudiškis	4	Skaudvilė	4
Ignalina	4	Skuodas	6
Jieznas	2	Smalininkai	5
Jonava	4	Subačius	1
Joniškėlis	3	Šakiai	4
Joniškis	5	Šalčininkai	4
Jurbarkas	7	Šeduva	4
Kaišiadorys	6	Šilalė	4
Kalvarija	2	Šilutė	4
Kavarskas	2	Širvintos	7
Kazlų Rūda	2	Švenčionėliai	4
Kėdainiai	9	Švenčionys	4
Kelmė	4	Tytuvėnai	4
Kybartai	4	Trakai	6
Kretinga	4	Troškūnai	4
Kudirkos Naumiestis	4	Ukmergė	6
Kupiškis	4	Užventis	2
Kuršėnai	5	Vabalninkas	3
Lazdijai	4	Varėna	4
Lentvaris	4	Varniai	4
Linkuva	3	Veisiejai	4
Mažeikiai	6	Venta	2
Molėtai	4	Viekšniai	4
Naujoji Akmenė	5	Vievis	3
Nemenčinė	3	Vilkaviškis	5
Neringa	35	Vilkija	2
Obeliai	4	Virbalis	2
Pabradė	4	Visaginas	6
Pagėgiai	4	Zarasai	6
Pakruojis	4	Žagarė	5
Palanga	25	Žemaičių Naumiestis	1
Pandėlys	1	Žiežmariai	3
420

Mathematical Background

Co-ordinate system LKS-94;
Map sheet division scheme and numbers in LKS-94 system (420 map sheets).

Application range

Digital orthophoto is very popular and frequently applied among GIS users. It became popular as the basic information layer while using modern GIS technologies.

Digital orthophoto can be used for technically specific tasks:

• planimetric and cadastre mapping;
•  municipality data registration and quality control;
•  for precise project analysis and implementation.

Digital orthophoto also can be used for presenting projects and solving disputes in public, because images of real ground surface are easier understood and percepted for untrained glance. There you can see landmarks and recognizable locations. World is constantly changing and digital orthophoto can help to watch and record these changes.

Assignement clauses

ORT5LT raster data is assigned in standard map sheets according to the National map sheet division scheme at scale 1:5000 and numbered in LKS-94 system.

ORT5LT vector data is assigned in TIFF format. The size of 1 map sheet of ORT5LT is ~ 300 MB. ORT5LT can be assigned in different formats upon a separate agreement. Delivering data in MrSID format SID it is compressed by 20 times.

The copyright of ORT5LT Digital Raster Orthophotographic Map of Settlements at scale 1:5000 belongs to the National Land Service under the Ministry of Agriculture. ORT5LT data is distributed by signing 2, 3, 4 or 5 year duration licence agreement with its official distributor the State Enterprise “GIS-Centras”.