MapInfo Spatial Server Map Tiling Service - Product Documentation ...
MapInfo Spatial Server Map Tiling Service - Product Documentation ...
MapInfo Spatial Server Map Tiling Service - Product Documentation ...
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Parameter<br />
MimeList<br />
<strong>Map</strong>Resolution<br />
<strong>Map</strong>Rendering<br />
RenderLabels<br />
PadFactor<br />
Type<br />
string<br />
integer<br />
string<br />
boolean<br />
integer<br />
Required<br />
no<br />
no<br />
no<br />
no<br />
no<br />
Description<br />
Note:<br />
The ExpirationDate parameter has effect<br />
only when using external caching software<br />
such as Squid or Apache.<br />
The available types of tiles generated by the tile<br />
server for named tiles when the MimeList is not<br />
specified.<br />
The resolution of the tile images in dots per inch<br />
(the number of individual dots that can be placed<br />
within the span of one linear inch). The minimum<br />
dpi you can define is 72, anything less would render<br />
a poor quality image. If a value less than 72 is<br />
defined, the service will throw an exception.<br />
The rendering quality (anti-alias) of the tile images<br />
generated. You can specify either Speed or Quality.<br />
If <strong>Map</strong>Rendering is not specified in either the<br />
global configuration or in a named tile, the default<br />
rendering quality is Speed.<br />
Tells the service not to render LabelLayers when<br />
generating a tile. The value is case-insensitive. If<br />
RenderLabels is not specified in either the global<br />
configuration or in a named tile, the default is 'true'.<br />
Used to prevent the clipping of labels when a label<br />
crosses a tile boundary. The PadFactor controls<br />
the amount of space is rendered around the requested<br />
tile with 0 meaning no padding, 1 meaning<br />
padding of 1 tile around the requested tile and so<br />
on. If PadFactor is not specified in either the<br />
global configuration or in a named tile, the default<br />
is 1.0.<br />
Internally, the <strong>Map</strong> <strong>Tiling</strong> service draws tiles to an offscreen bitmap (OSBM) (e.g., BufferedImage). To<br />
help speed up rendering of tiles by reducing garbage collection pauses, pools of offscreen bitmaps may<br />
be used to avoid constantly creating new ones. The OSBMPooling configuration controls how the offscreen<br />
bitmaps are created in memory.<br />
Note:<br />
If the OSBM pooling section of the configuration is removed, then pooling will not be enabled.<br />
The following are OSBM configuration paramters:<br />
Parameter<br />
MaxActive<br />
<strong>Map</strong> <strong>Tiling</strong> <strong>Service</strong> Guide<br />
Type<br />
integer<br />
Chapter 2: Managing <strong>Map</strong> <strong>Tiling</strong> Resources and Configuration<br />
Required<br />
no<br />
Description<br />
Controls the maximum number of offscreen bitmaps<br />
(per tile dimension) that can be allocated by the<br />
pool (checked out to client threads, or idle in the<br />
pool) at one time. When non-positive, there is no<br />
limit to the number of objects per key. When this<br />
value is reached, the keyed pool is said to be ex-<br />
9