How do I change a projection for a layer which is misregistered (without changing coordinates)?
Occurrence Vector objects such as Lines, Polylines or Polygons have been digitised into the incorrect projection. In this case, reprojection does not work, as the object coordinates will change (move). For example the vector object may have been created in the incorrect UTM Zone, or the wrong ...
- My image appears blurred
Occurrence When I open my grid or raster image and zoom in, the pixels appear blurred and smoothed Solution This is controlled by MAP>Map Options>Smooth Images. Simply set this to None. This will only change the current front map window, if you wish to change all new map window's default ...
- How do I reproject my data?
MapInfo and Discover provides a number of different Reprojection Utilities, depending on the type of data to be transformed. Each of these tools will create a copy of the data in the specified output projection, typically with a default _reproject suffix added to the input file name. These tool ...
- How do I clip my data to a polygon region?
Discover provides a number of tools to clip your map data to a area within a selected polygon - 1) Vector layers - QUERY>Map Object>Vector Clip 2) Images - IMAGES>Images Tools>Clip Image 3) Surface Grids - SURFACES>Utilities>Clip Some raster images and raster grids may also be ...
- How do I add a custom projection to MapInfo and Discover
Occurrence I've added a custom projection line to my MAPINFOW.PRJ but it does not appear in the select projection dialog box's list. Solution If the projection is not appearing in MapInfo Pro, it will need to added to the default MAPINFOW.PRJ file located in - C:\Program Files\MapInfo\Professio ...
- Discover 2019 - opening workspaces containing certain ECW files crashes
Occurrence In Discover 2019, opening certain ECW files crashes MapInfo Discover. These opened previous versions. Solution This issue was resolved in the Discover 2019 Update.
- What data formats and file types can I import?
Discover and MapInfo Professional can import an extensive range of industry standard and 3rd party data formats. The attached PDF (bottom of the page) list all supported formats under the following categories, and for each format details the location of the required import tool. Tabular and ...
- How do I clip my data down to a selected polygon or region boundary?
Discover provides a number of tools that allow you to clip or cut your datasets down to selected regions/areas. An example would be to provide subsetted datasets to government organisations for lease relinquishment reports, or to a joint venture partner. The tools are data type specific, i.e. ve ...
- How can I display a raster image on a drillhole vertical cross section?
It is possible to display a raster on a Discover cross section, however, it will require the registration of the image to the cross section coordinates. Please note that Discover cross sections are only in 2D space in a non-earth meters projection. See the related articles for more details. T ...
- What is the difference between registering a raster image via MapInfo Pro versus MapInfo Discover?
Two methods are available within the MapInfo Pro and MapInfo Discover product suite to register raster images in real-world coordinates. The process of registering an image involves associating map coordinates, usually X and Y, with corresponding pixels on an unregistered image. MapInfo Pro I ...
- Cannot process an image file using the Discover>Images module
Occurrence The Image is not listed in the selectable Images list, or when you attempt to load messages indicating 'Unsupported file format type'. Solution Certain image file types are not support by certain tools, such as Rectify Images does not support ECW files. Also within a file type of T ...
- Error in ERMAPPER registry entry
Occurrence When I start MapInfo Professional, I receive the error - ERROR in ERMAPPER registry entry. Please specify BASE_PATH value in the registry. Solution This is due to the installation of Discover's grid handler becoming corrupt, generally when ER Mapper or other programs have been isntal ...
- How do I convert an SRTM GeoTIFF image with embedded elevation data into a grid?
Occurrence SRTM GeoTIFFs often have elevation data embedded in the image file (e.g from http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp). Discover can extract this information, creating a grid that can be contoured and manipulated by the Surfaces menu (accessed via the Discover>Surfaces me ...
- How do I open an ECW/JPEG2000 in the correct projection?
Occurrence If I simply use File>Open Raster Image to open my JP2, J2K or ECW image, it does not open in the correct location or projection. How do I open it with the correct registration and projection? Solution To open ECW or JP2/J2K images you can use Discover>Import or Export>ECW/J ...
- My output image does not match the position of input image
Occurrence When using Image tools such as Image Clip or Image Rotate, the output image does not match the input image location and is slightly rotated or skewed. Solution This is caused by a skewed or mis-registered input Image. Simply use Image Rectify and load the existing control points, the ...
- How do I digitize contours from an image?
This is easily accomplished with either a mouse or a digitizing board/table. 1/. If using a digitizing board or table, connect it to the PC, and configure from within MapInfo (there are copious Help notes on doing this from within MapInfo’s help files: Help>MapInfo Professional Help ...
- How do I register an Image when my control points are in a different projection to the one required?
Occurrence For example, an old map or field control points are in latitude-longitude WGS84 (degrees) but you want to display and work with the image in UTM GDA94 Zone 55 (meters). Solution You will have to follow a 2 step process to produce an image in the desired projection: 1\. Rectify Image U ...
