Datamine Discover KB - Colour Grid

How can a MapInfo MIG surface grid's appearance be modified?

kbadmin — Mon, 07 Jul 2025 07:27:09 GMT

Solution

The MIG grid (MapInfo Continuous Grid) is primarily used for the MapInfo Professional's Thematic Grids. It is not recommended to use this grid format for gridded data.

Surface grids open in MapInfo Professional with Discover can be modified in two ways, either -

1) Discover>Surfaces>Colour Grid

2) Map>Modify Thematic Map>Styles

These two methods are only compatible to a limited degree, and some options, such as Sun-shading / Relief-shading are not compatible.

If you open a MIG grid which has been created without Discover, it may appear slightly different.

If you wish to ensure the MIG grid will appear the same without Discover installed, you should use the Modify Thematic option.

My image appears blurred

kbadmin — Thu, 08 Feb 2024 05:25:41 GMT

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 setting, navigate to Pro>Options>System>Styles.

How can I set a surface grid data range to display transparent?

kbadmin — Wed, 24 Dec 2008 02:57:26 GMT

Occurrence

The Surfaces>Modify Grid Display tool allows the transparency of an entire grid to be set.
But how can I set only a particular data range of a grid to be transparent?

Solution

You will need to select the option other then Full Grid; so you can clip by Value, Percentage or Percentile.

Enter your desired min/max value to apply Transparency. Then tick the option Set outside min/max to Transparent.