Generating tile names based on location

I must admit that I'm slightly confused as to the relationship between the original features and the tiles.

 

 

Looking at a (failed) log file of what I have done so far; I have 2,342,500 input features, the tiler then seems to output 2,369,574 features (where I'm assuming the additional features have been created where existing features have been clipped along tile boundaries).  I'm assuming that each feature now also has additional _row and _column attributes created by the tiler.

 

 

So, after being through the tiler do the tiles exist as actual features or are they conceptual in that existing features that have a given _row and _column that make up the 'tile'?

 

 

The log file also contained this summary;

 

Tiler_NUMCOLS               17

 

Tiler_NUMROWS               14

 

Tiler_NUM_TO_CREATE        238

 

Tiler_XINC                5000

 

Tiler_XMIN            250000.0

 

Tiler_XSEED                  0

 

Tiler_YINC                5000

 

Tiler_YMIN            325000.0

 

Tiler_YSEED                  0

 

 

So it looks like FME knows that the blocks of tiles created starts at 250000, 325000 and if this information was accessible within the workflow I could say something like;

 

TileOrigin_x = TILER_XMIN + (5000 * (_column - 1))

 

TileOrigin_y = TILER_YMIN + (5000 * (_row - 1))

 

 

Once I knew the TileOrigin x and y for each feature I could calculate the rest of what I need to generate the desired filename format.

Many thanks to ETLS-Itay and Neildan, between your responses I have managed to create a workflow that builds the tile names in the format I require.