topic Re: Georeferencing Bitmaps with no spatial reference data in ArcGIS Mapping and Charting Questions

Georeferencing Bitmaps with no spatial reference data

MarkNorris-Rogers — Thu, 13 Dec 2018 08:04:03 GMT

I have a set of scanned maps as .bmp files. These maps have no georeferencing, grids or any CRS data associated with them, and very few geographic features that can be used to georeference these maps. I can locate the approximate location manually, but there are polygon areas on these maps I need to georeference for a project. I was hoping to use a rubber-sheeting method to get these maps georeferenced as best I could but can't get the .bmp image to show up on the ArcMap mxd that has the base layer I want to align it with. Any ideas?? Thanks very much

Re: Georeferencing Bitmaps with no spatial reference data

DanPatterson_Retired — Thu, 13 Dec 2018 11:47:30 GMT

this can be done in arcmap or in ArcGIS pro by several methods

see 'georeferencing' in the appropriate help … eg.

Georeferencing a raster to a referenced layer—ArcGIS Pro | ArcGIS Desktop

Re: Georeferencing Bitmaps with no spatial reference data

MarkNorris-Rogers — Fri, 14 Dec 2018 11:12:20 GMT

Hi Dan,

Thanks for this. I could not get it to work in Pro (bitmap would not load for some reason?) but it worked fine in Desktop. I am also not sure why these help files did not appear when I ran a search on this topic, but obviously did not use the right keywords. Anyway, sorted now, thanks again.

Mark