Changes between Version 2 and Version 3 of SoCTMSDriver

Timestamp:

Mar 26, 2008, 10:22:58 AM (16 years ago)

Author:

keo

Comment:

--

SoCTMSDriver

@@ -41 +41 @@
 on the lowest zooming level.
 
-=== Write driver with `CreateCopy` ===
+=== Write driver ===
 
-Next on plan is the writing part. The driver will at first support the
-`CreateCopy` method returning the created dataset as `ReadOnly` (implemented in previous step). 
+Next on plan is the writing part. The driver will support both `CreateCopy` and `Create` methods.
 Creation options will include the dimensions of tiles, number of zooming levels and the zooming 
-ratio between them.
+ratio between them. Upon writing, the `RasterIO` method will load all affected tiles from all 
+zooming levels into memory, perform the write operation and then write the tiles back to file system.
 
-=== Write driver with `Create` ===
+=== NODATA ===
 
-In this step the driver will also feature the `Create` method and `Update` mode datasets.
-Upon writing, the `RasterIO` method will load all affected tiles from all zooming levels
-into memory, perform the write operation and then write the tiles back to file system.
+The map doesn't neccesarily need to have a rectangle form and the driver should be supportive in this.
+It could report data from missing tiles as NODATA and not write them to file system unless the 
+user performs write operation on them. This way the maps could be stored compactly.