Adobe Photoshop

Optimizing Geospatial PDF files for PDF Maps

PDF MAP application for iPad, iPhone, iPod touch You can bring your maps anywhere with our PDF Maps iOS app for iPhone, iPad, and iPod Touch. You can navigate your own map, locate yourself, make a note at the position collected, measure distances, and export and share the collected waypoints on a desktop or online application.

New Transformation Method for World Maps in Geographic Imager 3.2

When transforming a world image, there may be artifacts created by the Geographic Imager transformation engine. Below are the results of a WGS84 world image transformed into a Stereographic projection.

Geographic Imager 3.1 transformation result

When we zoom into the problematic area, you can see up close how some artifacts affect the image after the transformation was performed.

Creating a Custom Coordinate System from a Predefined Coordinate System

When transforming a world map in a geodetic system (such as WGS84) to a predefined projection (such as Robinson) using MAPublisher, the central meridian of the predefined projection should be set to 0 degree longitude as shown below.

Image 1: world map in WGS84

World map in WGS84 geodetic system

Image 2: world map in a predefined Robinson Projection

Geographic Imager: Using Photoshop Info panel to explore elevation values

After importing a DEM file, you can always check the elevation value of a specific pixel in the Georeference dialog window. When you hover your mouse over the DEM image in the preview windw, you can get the image XY coordinate, latitude and longitude values, eastings and northing values (if the map is projected), as well as the elevation value.

Geographic Imager 3.2: Introduction to Terrain Shader, Part 3 - Applying Terrain Shader to multiple DEM files

If your workflow involves Terrain Shader, specifying a DEM schema is an important step, especially when dealing with mulitple DEM files.

When importing a single DEM file, Geographic Imager converts elevation values to gray scale values. For example, if the elevation range in your DEM file is between 0 and 2500 meters and the "Auto-stretched" option is selected, this range will be converted to the Adobe Photoshop gray scale range between black and white. As shown below, the black color is assigned to the lowest elevation value (0 meter) while the white color is assigned to the highest elevation value (2500 meters). For elevation values between 0 and 2500, Geographic Imager calculates and converts them into gray scale.

Import DEM File - Auto-stretched
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