Using the ExtData component: Difference between revisions

Line 91:

=== Masks ===

Masks::

# ---------|------------|------|

# Export | Name on | |

# Name | File | File |

# ---------|------------|------|

CO_MASK regionMask path_to_file

::

</pre>

Masks represent a special kind of data. Sometimes one has data that is purely integers. For example this might be different regions of the world that are tagged with a particular integer index. Just like primary entries a mask entry satisfies an import. However they are treated specially and interpolated so that the values on the application grid remain integers. There is also no facility to time interpolate this data so the file should only have one time entry. The masks are updated only once during initialization.

=== Derived Exports ===

The user can also specify derived exports. The user specifies an import to satisfy, an expression, and a refresh template. When the import is updated it is updated with the result of the expression. The expression is evaluated user the MAPL parser component and can involve any fields in the primary export section. Although it is currently not checked, the refresh template on the derived export should be the same as the primary exports in the expression. Also, the primary exports in the expression need not actually be needed to fulfill an import but can still be used in a derived expression.

@@ Line 91: / Line 91: @@
 === Masks ===
+Masks::
+# ---------|------------|------|
+#  Export  | Name on    |      |
+#  Name    |   File     | File |
+# ---------|------------|------|
+CO_MASK     regionMask   path_to_file
+::
+</pre>
+Masks represent a special kind of data. Sometimes one has data that is purely integers. For example this might be different regions of the world that are tagged with a particular integer index. Just like primary entries a mask entry satisfies an import. However they are treated specially and interpolated so that the values on the application grid remain integers. There is also no facility to time interpolate this data so the file should only have one time entry. The masks are updated only once during initialization.
 === Derived Exports ===
 The user can also specify derived exports. The user specifies an import to satisfy, an expression, and a refresh template. When the import is updated it is updated with the result of the expression. The expression is evaluated user the MAPL parser component and can involve any fields in the primary export section. Although it is currently not checked, the refresh template on the derived export should be the same as the primary exports in the expression. Also, the primary exports in the expression need not actually be needed to fulfill an import but can still be used in a derived expression.