Often your points, lines and polygons have considerably more data attached to them than can be realistically displayed on a map. This information is stored in an attribute table which is linked to a vector layer. Within the attribute table the data is stored in rows (records) and columns (fields) and this information can be queried in a number of different ways.
For instance if you use the Identify Features tool within the map to bring up the attribute data on a particular object you are then viewing the related row stored within the table. Similary clicking on rows within the attribute table will highlight the relevant objects within your map.
For instance if you use the Identify Features tool within the map to bring up the attribute data on a particular object you are then viewing the related row stored within the table. Similary clicking on rows within the attribute table will highlight the relevant objects within your map.
Both MapInfo and ArcGIS allow you to hide columns which can then, if required, be restored with a mouse click. Additionally, MapInfo and ArcGIS allow you to move columns by clicking on the column headings, which highlights the fields, and dragging the column to a new position within the table.
Most GIS desktop software has the facility for sorting on a specific field. For instance if you had a City field this could be sorted in ascending or descending order. You achieve this by clicking on the column head or by accessing a menu option. Again statistical information regarding a specific field within the attribute table can be obtained with most GIS desktop software. Both ArcGIS and MapInfo have statistical functionality available from within the attribute table. QGIS has an option providing similar information but this is not currently available within the attribute table itself.
If you would like to further explore how GIS could help your organisation JPS Services offers instructor led online and onsite one and two day training courses in QGIS, ArcGIS and MapInfo. For more information please complete the enquiry form.
Most GIS desktop software has the facility for sorting on a specific field. For instance if you had a City field this could be sorted in ascending or descending order. You achieve this by clicking on the column head or by accessing a menu option. Again statistical information regarding a specific field within the attribute table can be obtained with most GIS desktop software. Both ArcGIS and MapInfo have statistical functionality available from within the attribute table. QGIS has an option providing similar information but this is not currently available within the attribute table itself.
If you would like to further explore how GIS could help your organisation JPS Services offers instructor led online and onsite one and two day training courses in QGIS, ArcGIS and MapInfo. For more information please complete the enquiry form.
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