I have shapefile with 5 features with an integer attribute - DAMAMGE).
Each of these features as a unique DAMAGE value between 1 and 5. In
uDig I'm creating a color-theming style that creates 5 rules that are
similar to the SLD below. These rules basically evaluate the statement
"1 <= DAMAGE < 1.8";
When I view the results in uDig, the colors are incorrect as the
features are being put in the wrong categories. From my debugging it
looks like that when the filter is evaluating, the "1.8" is being
converted to the Integer "1" thus evaluating the expression "1 <= DAMAGE
< 1" which is always going to return false.
This conversion from 1.8 to 1 is being done in the eval function of the
BinaryComparisonAbstract class. Here it converts the "1.8" double to an
integer.
I'm wondering how/if this can be fixed? (or maybe it's designed to work
this way?)
I was thinking of trying to add some logic to this function to be
smarter about the conversion done & try to not loose precision if
possible (for example convert from integer to double before we convert
from double to integer). I'm not sure if this is the best way to go
about this?
Thanks,
Emily
<sld:Rule>
<sld:Name>rule01</sld:Name>
<sld:Title>1..1.8</sld:Title>
<ogc:Filter>
<ogc:And>
<ogc:PropertyIsGreaterThanOrEqualTo>
<ogc:PropertyName>Damage</ogc:PropertyName>
<ogc:Literal>1</ogc:Literal>
</ogc:PropertyIsGreaterThanOrEqualTo>
<ogc:PropertyIsLessThan>
<ogc:PropertyName>Damage</ogc:PropertyName>
<ogc:Literal>1.8</ogc:Literal>
</ogc:PropertyIsLessThan>
</ogc:And>
</ogc:Filter>
<sld:MaxScaleDenominator>1.7976931348623157E308</sld:MaxScaleDenominator>
<sld:PolygonSymbolizer>
<sld:Fill>
<sld:CssParameter name="fill">
<ogc:Literal>#EFF3FF</ogc:Literal>
</sld:CssParameter>
<sld:CssParameter name="fill-opacity">
<ogc:Literal>0.5</ogc:Literal>
</sld:CssParameter>
</sld:Fill>
<sld:Stroke>
<sld:CssParameter name="stroke">
<ogc:Literal>#000000</ogc:Literal>
</sld:CssParameter>
<sld:CssParameter name="stroke-linecap">
<ogc:Literal>butt</ogc:Literal>
</sld:CssParameter>
<sld:CssParameter name="stroke-linejoin">
<ogc:Literal>miter</ogc:Literal>
</sld:CssParameter>
<sld:CssParameter name="stroke-opacity">
<ogc:Literal>1</ogc:Literal>
</sld:CssParameter>
<sld:CssParameter name="stroke-width">
<ogc:Literal>1</ogc:Literal>
</sld:CssParameter>
<sld:CssParameter name="stroke-dashoffset">
<ogc:Literal>0</ogc:Literal>
</sld:CssParameter>
</sld:Stroke>
</sld:PolygonSymbolizer>
<sld:Rule>
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