Alternate title

Soils of Scotland 1:250,000 Soils vector

Alternate title

qmsoils

Date ()

1981-01-01

Identifier

qmsoils_2013

Presentation form

mapDigital

Maintenance and update frequency

irregular

Name

ESRI Shapefile

Version

1.0

Keywords

• soil

• land form

• base material

GEMET - INSPIRE themes, version 1.0 ()

• Soil

Access constraints

otherRestrictions

Other constraints

no limitations on public access

Use constraints

The James Hutton Institute Open Data Licence

Use constraints

This data was produced at a scale of 1:250,000. Larger scale data is available for the main agricultural areas of Scotland. Use is permitted under the terms of the Open Data licence included in the download.

Spatial representation type

vector

Denominator

250000

Metadata language

eng (en)

Topic category

• Farming
• Geoscientific information

Geographic identifier

GB-SCT

Reference system identifier

EPSG

/

OSGB 1936 / British National Grid (EPSG:27700)

/

7.9

Distribution format

• ESRI Shapefile

  (

  1.0

  )

OnLine resource

0 (

OGC:WMS

)

National Soil Map of Scotland

Scope

dataset

Statement

Data gathering: Start: 01/01/1947, End: 01/01/1981

Collection methods: The digitising of this dataset was done by Laser-Scan, Cambridge. A film version of the lines was used as a source document for scanning. Dyeline prints of the soil lines were symbolized by hand and used as the source document for coding the polygons. The data was supplied in GIMMS format, and was first used for a joint venture with the Institute of Hydrology, who produced a raster version of the data at a resolution of 100 metres. In the course of this work they discovered and resolved many problems with edge-matching, errors in coding etc, which had not come to light previously. During this work soil boundaries were extended over all the built-up areas on the maps. The vector data was converted to a more useable format in the mid-eighties. Vector strings and arc-polygon labels were read from the GIMMS format, written to textfiles and used to produce plots to assist with the LCF map series. Later the vectors were imported into ARC/Info and a method devised for labelling the polygons. A more rigorous check of the accuracy of the dataset was done, which revealed coding and positional errors. The dataset can be considered as being composed of three layers: soil boundaries, lochs and coastline. These layers vary in their absolute and relative positional accuracy, when compared with the source 1:50,000 documents. Localised errors of up to 200 m have been observed in the lochs layer (possibly due to a mis-registration of plates during the reprographics phase of map production) and also therefore in common boundaries with soil polygons. It was accepted that it would take an inordinate amount of time to correct all the errors and that the best that could be done would be to check and correct the coding of polygons and any gross positional errors of soil boundaries. This work was done using the original data (vector, with built-up areas) and a dataset named Soils of Scotland 1:250,000 Soils and Built-up Area vector was produced. It was from this basic dataset that this dataset the Soils of Scotland 1:250,000 Soils vector was created. Raster versions of both vector datasets were made at resolutions of 100 metres and 1 kilometre.

Originator: Formerly DAFS (Department of Agriculture and Fisheries for Scotland), then SOAEFD (Scottish Office Agriculture, Environment and Fisheries Department), now SERAD (Scottish Executive Rural Affairs Department)

Data collectors: SURVEYING and INTERPRETATION: Eastern Scotland - Alexander Walker, Northern Scotland - Donald W Futty, Orkney and Shetland - Frank T Dry, Outer Hebrides - Gordon Hudson, South-East Scotland - Cyril J Bown, South-West Scotland - Cyril J Bown, Western Scotland - John S Bibby. DIGITISING: Laser-Scan, Cambridge.

Revision on 11/10/11 to correct truncated parent material information.

Ownership of this data set was passed to the James Hutton Institute on 1st April 2011.

Metadata

File identifier

B7E65842-C041-4950-BF0C-3AF06C2DBAE7

Metadata language

eng (en)

Resource Type

dataset

Date stamp

2022-03-23

Metadata standard name

UK GEMINI

Metadata standard version

2.2