Simple Tool for Cropping Maps with Collars in Global Mapper
Have you ever tried to view multiple raster maps, such as topographic maps from the United States Geological Survey (USGS), only to have the collars overlap? Borders from raster maps that overlap cover the data in the adjacent maps, which looks messy and ruins the transition between them. Solving this problem can be a time-consuming and imprecise process requiring the manual cropping or removal of these borders.
Global Mapper is a user-friendly application that offers various solutions to common data management challenges. In Global Mapper the automatic crop collar function efficiently and effectively solves this problem by recognizing the transitional boundary between the actual map and the supplementary information, such as the scale and legend. This boundary is called the neatline and is used by Global Mapper to determine which portion of the file to retain and which pixels should be removed from the display. This powerful tool can be used to quickly remove the white border around a digital raster graphic (DRG) file, the small black collar around a 3.75-minute digital orthophoto quadrangle (DOQQ), or the map collar around a BSB marine chart. Allowing the seamless viewing of adjacent maps. In this blog, we’ll walk through the stress-free steps on how to crop the border in these files.
GeoTIFF in Global Mapper after collar crop
If you’d like to try this workflow for yourself or would like to learn more about Global Mapper, download a 14-day free trial and request a demo today! For more information, contact us.