Raster Map Properties

Raster Map tab:

Object type and name:

Raster Map "raster map name": the raster map is an editable source map.

Map Calculate "raster map name": the raster map is the result of a MapCalc formula (dependent map).

Dependent Raster Map "raster map name": the raster map is the result of another operation (dependent map).

When you click this flat button, the raster map will be (re)opened.

Georeference:

The name, the type and the description of the georeference used by this raster map are listed.

Coordinate system:

The name, the type and the description of the coordinate system used by the georeference of this raster map are listed.

(Pixel) Size of raster map:

The number of lines and columns of the raster map are listed. If possible, also an estimation of the pixel size of the raster map is listed.

Boundaries of map:

It is listed whether the coordinates of the georeference are used by the Corners of the corner pixels or by the Centers of the corner pixels.

Furthermore, the coordinate boundaries of this map are listed as:

In case the coordinates of the map are in LatLon, degrees, minutes and seconds will be shown.

Number of bytes per pixel:

The number of bytes used on disk to store each pixel of this raster map is listed (either 1 bit per pixel, or 1, 2, 4, or 8 bytes per pixel).

Domain:

The name, the type and the description of the domain that is used by this raster map are listed.

Attribute table:

In case this map uses a class or ID domain, and the map or the domain has an attribute table, then the name of the attribute table is shown.

Select this check box to link an attribute table to this raster map, or select this check box to create a new attribute table for this raster map (click the create button).

Value range:

In case this map uses a value domain, the minimum and maximum values that can be stored by this map are listed. This is also called the value range of the map.

Precision:

In case this map uses a value domain, the precision of the values that can be stored by this map is listed.

Minimum and maximum:

In case this is a value map and the actual minimum and maximum values as occurring in the map have been calculated, the actual minimum and maximum value in this map are shown.

Interpolation:

For value raster maps: Select this check box when within pixels, values should be interpolated. This means that a pixel value of a certain pixel will refer to the center of that pixel only; elsewhere a value will be interpolated on the basis of 4 or 16 neighbouring pixel values. Subsequently choose for bilinear interpolation or bicubic interpolation.

It is strongly advised to use the interpolation option for Digital Terrain Models (DTMs), also called Digital Elevation Models (DEMS), that are used by a georef direct linear or a georef orthophoto.

Furthermore, when you selected the Interpolation option,

• when you zoomed in in a map window and pressing the left mouse button, you will obtain Info on sub-pixel level,
• the pixel info window will show interpolated values, and
• in a table window, you can retrieve interpolated values by using the MAPVALUE() function.

Clear this check box when pixel values should be applied to the whole pixels.

Definition:

For dependent maps: the expression by which the object was created is listed, i.e. the object definition.

Edit Definition:

For Map Calculate raster maps, click this button to edit the MapCalc formula by which this raster map is created. The Raster Map Definition dialog box will appear.

'No pyramid layers available' + Create / 'Pyramid layers available' + Remove:

It is listed whether pyramid layers have been created for this raster map or not. Pyramid layers speed up the display of large raster maps in a map window.

• If no pyramid layers are available for this raster map, click the Create button to create the pyramid layers.
• If pyramid layers are available for this raster map, you can click the Remove button to delete the pyramid layers.

The information is not listed, and the Create/Remove buttons are not available, when the raster map has been defined but has not been calculated yet.

General tab:

Object type and name:

Raster Map "raster map name": the raster map is an editable source map.

Map Calculate "raster map name": the raster map is the result of a MapCalc formula (dependent map).

Dependent Raster Map "raster map name": the raster map is the result of another operation (dependent map).

When you click this flat button, the raster map will be (re)opened.

Location:

The path and directory where this object is stored.

Object date and time:

Date and time when this raster map was last changed.

Object size:

Total size of the raster map on disk in bytes (.MPR and .MP#).

Read only:

Select this check box to make the raster map read only. Clear this check box to make the raster map changeable.

Description:

Description of the object; freely editable. The description of a map appears in the title bar of a map window when the map is displayed. Furthermore, the description is visible on the status bar of the Main window when moving the mouse pointer over the map in a Catalog.

Dependency tab (for dependent maps):

Object type and name:

Map Calculate "raster map name": the raster map is the result of a MapCalc formula (dependent map).

Dependent Raster Map "raster map name": the raster map is the result of another operation (dependent map).

When you click this flat button, the raster map will be (re)opened.

Definition:

The expression by which the object was created is listed, i.e. the object definition.

Up-to-date or not:

Lists whether this raster map is up-to-date or not. If not, the name of the object which was changed last is shown including that object's date and time.

Depends on:

In a tree view, the names of the objects are listed on which this raster map depends.

Calculate:

When only the object definition file of this raster map (.MPR) exists:

• click this button to (re)calculate the data file (.MP#) of this raster map by (re)executing the definition of this map.

Make Up-to-Date:

When the raster map is not up-to-date anymore,

i.e. when one or more objects on which this raster map depends have been changed, and when both the object definition file (.MPR) and the data file (.MP#) of this raster map exist:

• click this button to check all objects on which this raster map depends, see if these are up-to-date, if not, check all objects below, etc.,
• recalculate all changed objects on which this raster map depends, and finally recalculate the data file of this raster map using all new changed objects.

Release Disk Space:

When both the object definition file (.MPR) and a calculated data file (.MP#) exist:

• click this button to delete the data file of this raster map.

The expression by which this dependent raster map was created remains stored in the object definition file, so this raster map can always be recalculated.

Break Dependency Link:

Whether this raster map is Up-to-Date or not:

• click this button to break the dependency link between this raster map and the objects on which it depends. This raster map will become an editable source object.

Do not break the dependency link if you wish to be able to update this raster map in a later stage on the basis of changed input objects.

Used By tab:

Object type and name:

Raster Map "raster map name": the raster map is an editable source map.

Map Calculate "raster map name": the raster map is the result of a MapCalc formula (dependent map).

Dependent Raster Map "raster map name": the raster map is the result of another operation (dependent map).

When you click this flat button, the raster map will be (re)opened.

Used By:

In a tree view, it is listed by which other objects this raster map is used.

Additional Info tab:

Object type and name:

Dependent Raster Map "raster map name": the raster map is the result of another operation (dependent map).

When you click this flat button, the raster map will be (re)opened.

Additional Info:

When a dependent raster map is the result of a Trend Surface operation: the equation of the calculated Trend Surface is listed.

When a dependent raster map is the result of a Variogram Surface operation: the average, variance and the unbiased variance estimate of the input pixel values are listed.