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tilestache-seed(1) [debian man page]

TILESTACHE-SEED(1)					      General Commands Manual						TILESTACHE-SEED(1)

NAME
tilestache-seed - seed a single layer in your TileStache configuration SYNOPSIS
tilestache-seed [options] zoom... DESCRIPTION
This manual page documents briefly the tilestache-seed command. tilestache-seed seeds a single layer in your TileStache configuration. No images are returned, but TileStache ends up with a pre-filled cache. Bounding box is given as a pair of lat/lon coordinates, e.g. "37.788 -122.349 37.833 -122.246". Output is a list of tile paths as they are created. Configuration, BBox, and Layer options are required. REQUIRED OPTIONS
-c, --config file Path to configuration file. Required. -l, --layer layer Layer name from configuration. Required. -b, --bbox south west north east Bounding box in floating point geographic coordinates. Required. OPTIONS
-h, --help Show summary of options. -p, --padding padding Extra margin of tiles to add around bounded area. Default value is 0 (no extra tiles). -e, --extension extension Optional file type for rendered tiles. Default value is "png". -f, --progress-file file Optional JSON progress file that gets written on each iteration, so you don't have to pay close attention. -q Suppress chatty output, --progress-file works well with this. -i, --include-path Add the following colon-separated list of paths to Python's include path (aka sys.path). -d, --output-directory Optional output directory for tiles, to override configured cache with the equivalent of: {"name": "Disk", "path": <output directory>, "dirs": "portable", "gzip": []}. More information in http://tilestache.org/doc/#caches. --to-mbtiles Optional output file for tiles, will be created as an MBTiles 1.1 tileset. See http://mbtiles.org for more information. --from-mbtiles Optional input file for tiles, will be read as an MBTiles 1.1 tileset. See http://mbtiles.org for more information. Overrides --extension, --bbox and --padding (this may change). --tile-list Optional file of tile coordinates, a simple text list of Z/X/Y coordinates. Overrides --bbox and --padding. --error-list Optional file of failed tile coordinates, a simple text list of Z/X/Y coordinates. If provided, failed tiles will be logged to this file instead of stopping tilestache-seed. --enable-retries If true this will cause tilestache-seed to retry failed tile renderings up to (3) times. Default value is False. -x, --ignore-cached Re-render every tile, whether it is in the cache already or not. SEE ALSO
tilestache-render(1) AUTHOR
TileStache was written by Michal Migurski <mike@stamen.com>. This manual page was written by David Paleino <dapal@debian.org>, for the Debian project (and may be used by others). Nov 10, 2010 TILESTACHE-SEED(1)

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map::slippy(3tcl)						 Mapping utilities						 map::slippy(3tcl)

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NAME
map::slippy - Common code for slippy based map packages SYNOPSIS
package require Tcl 8.4 package require Tk 8.4 package require map::slippy ?0.4? ::map::slippy length level ::map::slippy tiles level ::map::slippy tile size ::map::slippy tile valid tile levels ?msgvar? ::map::slippy geo 2tile geo ::map::slippy geo 2tile.float geo ::map::slippy geo 2point geo ::map::slippy tile 2geo tile ::map::slippy tile 2point tile ::map::slippy point 2geo point ::map::slippy point 2tile point _________________________________________________________________ DESCRIPTION
This package provides a number of methods doing things needed by all types of slippy-based map packages. API
::map::slippy length level This method returns the width/height of a slippy-based map at the specified zoom level, in pixels. This is, in essence, the result of expr { [tiles $level] * [tile size] } ::map::slippy tiles level This method returns the width/height of a slippy-based map at the specified zoom level, in tiles. ::map::slippy tile size This method returns the width/height of a tile in a slippy-based map, in pixels. ::map::slippy tile valid tile levels ?msgvar? This method checks whether tile described a valid tile in a slippy-based map containing that many zoom levels. The result is a bool- ean value, true if the tile is valid, and false otherwise. For the latter a message is left in the variable named by msgvar, should it be specified. A tile identifier as stored in tile is a list containing zoom level, tile row, and tile column, in this order. The command essen- tially checks this, i.e. the syntax, that the zoom level is between 0 and "levels-1", and that the row/col information is within the boundaries for the zoom level, i.e. 0 ... "[tiles $zoom]-1". ::map::slippy geo 2tile geo Converts a geographical location at a zoom level (geo, a list containing zoom level, latitude, and longitude, in this order) to a tile identifier (list containing zoom level, row, and column) at that level. The tile identifier uses pure integer numbers for the tile coordinates, for all geographic coordinates mapping to that tile. ::map::slippy geo 2tile.float geo Converts a geographical location at a zoom level (geo, a list containing zoom level, latitude, and longitude, in this order) to a tile identifier (list containing zoom level, row, and column) at that level. The tile identifier uses floating point numbers for the tile coordinates, representing not only the tile the geographic coordinates map to, but also the fractional location inside of that tile. ::map::slippy geo 2point geo Converts a geographical location at a zoom level (geo, a list containing zoom level, latitude, and longitude, in this order) to a pixel position (list containing zoom level, y, and x) at that level. ::map::slippy tile 2geo tile Converts a tile identifier at a zoom level (tile, list containing zoom level, row, and column) to a geographical location (list con- taining zoom level, latitude, and longitude, in this order) at that level. ::map::slippy tile 2point tile Converts a tile identifier at a zoom level (tile, a list containing zoom level, row, and column, in this order) to a pixel position (list containing zoom level, y, and x) at that level. ::map::slippy point 2geo point Converts a pixel position at a zoom level (point, list containing zoom level, y, and x) to a geographical location (list containing zoom level, latitude, and longitude, in this order) at that level. ::map::slippy point 2tile point Converts a pixel position at a zoom level (point, a list containing zoom level, y, and x, in this order) to a tile identifier (list containing zoom level, row, and column) at that level. COORDINATE SYSTEMS
The commands of this package operate on three distinct coordinate systems, which are explained below. GEOGRAPHIC Geographical coordinates are represented by Latitude and Longitude, each of which is measured in degrees, as they are essentially angles. Zero longitude is the Greenwich meridian, with positive values going east, and negative values going west, for a total range of +/- 180 degrees. Note that +180 and -180 longitude are the same meridian, opposite to greenwich. zero latitude the Equator, with positive values going north and negative values going south. While the true range is +/- 90 degrees the projection used by the package requires us to cap the range at +/- 85.05112877983284 degrees. This means that north and south pole are not representable and not part of any map. TILES While Geographical coordinates of the previous section are independent of zoom level the tile coordinates are not. Generally the integer part of tile coordinates represent the row and column number of the tile in question, wheras the fractional parts signal how far inside the tile the location in question is, with pure integer coordinates (no fractional part) representing the upper left corner of the tile. The zero point of the map is at the upper left corner, regardless of zoom level, with larger coordinates going right (east) and down (south), and smaller coordinates going left (west) and up (north). Again regardless of zxoom level. Negative tile coordinates are not allowed. At zoom level 0 the whole map is represented by a single, putting the geographic zero at 1/2, 1/2 of tile coordinates, and the range of tile coordinates as [0...1]. To go from a zoom level N to the next deeper level N+1 each tile of level N is split into its four quadrants, which then are the tiles of level N+1. This means that at zoom level N the map is sliced (horizontally and vertically) into 2^N stripes, for a total of 4^N tiles, with tile coor- dinates ranging from 0 to 2^N+1. PIXELS/POINTS pixel coordinates, also called point coordinates are in essence tile coordinates scaled by the size of the image representing a tile. This tile size currently has a fixed value, 256. REFERENCES
[1] http://wiki.openstreetmap.org/wiki/Main_Page KEYWORDS
geodesy, geography, latitute, location, longitude, map, slippy, zoom map 0.4 map::slippy(3tcl)
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