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annotate doku/source/restrictions.txt @ 251:6b80e46b8f38

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Added picture symbol support to the converter.
author raimund renkert <raimund.renkert@intevation.de>
date Fri, 12 Aug 2011 16:08:57 +0200
parents d10fd4de02aa
children 4dc2b9aa3c57
rev   line source
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1 .. index:: restrictions, label, Raster, ArcSDE, SDE, workaround, picture-symols, windows, ArcEngine
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2 .. _restriction-label:
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4 ------------
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5 Restrictions
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6 ------------
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7
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8 Currently there are some restrictions in the usage of the converter. One
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9 of the main restrictions is the fact that the converter currently only
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10 runs on Windows. This is due to the fact that the needed ArcEngine did
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11 never reliably work on Linux. This was tested with ArcEngine 10.0.
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13 Supported datasources:
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14
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15 * ArcSDE-passwords cannot be read since they are encrypted. The converter
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16 exports the string ``<PASSWORD>`` which needs to be replaced later on in the
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17 resulting mapfile.
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19 * Since MapServer cannot use a FileGeodatabase datasources (yet) the MXD2map
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20 does not support this datasource and will not transform the MXD-file at
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21 all. This may change in the near future.
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22
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23 * Raster data is not supported by the converter yet, though ArcSDE
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24 Raster-support will be available in the near future.
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26 Symbol support:
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28 * Line symbols with pattern cannot be combined with marker symbols. The
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29 converter reads all symbols and writes the corresponding styles to the
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30 resulting mapfile but the marker symbols are rendered without any gap.
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31 The resulting mapimage may not look as intended.
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32
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33 .. hint::
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34 Workarround: For small marker symbols it is recommended to use a line symbol in
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35 combination with pattern (in ArcGIS called template) to create the
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36 symbology.
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37 The reason why marker symbols cannot be used in combination with a template
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38 is the difficulty to interpret the read attributes like marks and gaps and
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39 write the appropriate symbols with the appropiate gap to the mapfile.
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41 * The converter sets the width to 1 for line symbols that have a width
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42 smaller than 1.
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43
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44 .. tip::
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45 To avoid lines and line colors (specially outlines) to be handled by the
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46 converter, use integer numbers for line width only.
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47
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48 * In ArcGIS maps default symbols can be defined as fallback within classifications.
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49 Since MapServer does not support such fallback symbols or styles
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50 within classifications the converter does not read these default symbols.
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52 * In ArcGIS predefined symbols like bars or pie charts can be used to display
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53 values. The converter does not support these symbols yet.
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55 Layer support:
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56
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57 * Expressions for label are parsed by an internal parser in ArcGIS. The
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58 interpretation of this expressions is very limited though.
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59 Therefore label expressions may not contain any special functions or must fit
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60 the mapserver expression design pattern.
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