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[maplab-users] (LONG) Question/Problem with Legendswoodbri@swoodbridge.com woodbri@swoodbridge.comSun, 29 Sep 2002 16:47:56 -0400
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Hi all,
I have run into an interesting problem when I tried to move a working
mapfile into maplab and suddenly a bunch of my layers vanished! I
have tracked this down to what I think is causing the problem.
The mapfile was create when I was originally playing around with
mapserver skins, which has been superseded by the legend_templates
code. I have a bunch of related layers the all have the same name
because I did not want lots of layers all label as Roads when they
really is only one Road layer, but mapserver requires us to have
multiple layers to style the roads differently at different zoom
scales.
So we have GROUP to groups layers together, we have a bunch of LAYERs
that belong to a GROUP and these can be a mix of spatial object and
annotation object layers.
So it seems that because I use the same layer names for the layers
that I want grouped the legend templates generates multiple entries
in the html like
name="layer[]" value="highway"
and there is no what to differentiate from the multiple entries. I
suppose I need to make the names unique, but I have not been able to
figure out how to get groups to work.
So I am very confused now about how I HAVE to set these up in the map
file and what I have to do to the legend_template.html file to get
these to display.
I would appreciate some insight as to how to work around this
problem.
Thanks,
-Steve W.
I made the following change to my legend_template.html file to hide
ANNOTATION layers from being displayed in the legend and it works
great in the http://iMapTools.com/vmap0a demo
--------------------- legend_template.html -----------------
[leg_layer_html Opt_Flag=15]
[if name=layer_type oper=neq value=4]
<tr bgcolor="#FFFFFF">
<td align="center">
<input type="checkbox" name="layer_status[]"
value="[leg_layer_name]" [if name=layer_status oper=eq
value=1]CHECKED[/if][if name=layer_status oper=eq
value=2]CHECKED[/if]>
</td>
<td><img src="[leg_icon height=10 width=20]" height=10
width=20></td>
<td><font face="Arial, Helvetica, sans-serif" size="2">[if
name=layer_name oper=neq value=][leg_layer_name][/if][if
name=layer_name value=]* Name Not Set*[/if]</font></td>
</tr>
[/if]
[if name=layer_type oper=eq value=4]
<input type="hidden" name="layer_status[]"
value="[leg_layer_name]">
[/if]
[/leg_layer_html]
------------ end of file ---------------
My mapfile contains the following layers for "highways"
LAYER
NAME "highways"
STATUS ON
# TILEINDEX "tgrindex"
# DATA majroads
TYPE LINE
TILEINDEX "majrdtile"
CLASSITEM "CLASS"
MINSCALE 3000000
MAXSCALE 9000000
TOLERANCE 3
HEADER "html/roads_header.html"
FOOTER "html/roads_footer.html"
TEMPLATE "html/roads.html"
METADATA
"DESCRIPTION" "Major Roads"
"RESULT_FIELDS" "TLID NAME CFCC FRADDL TOADDL FRADDR TOADDR
ZIPL ZIPR RTE_NUM"
END
CLASS
NAME "Interstate"
EXPRESSION /^I/
SYMBOL "circle"
COLOR 0 0 0
SIZE 3
OVERLAYSYMBOL "circle"
OVERLAYCOLOR 244 0 0
OVERLAYSIZE 1
END
END
# highways
LAYER
NAME "highways"
STATUS ON
# TILEINDEX "tgrindex"
# DATA majroads
TYPE LINE
TILEINDEX "majrdtile"
CLASSITEM "CLASS"
MINSCALE 275000
MAXSCALE 2999999
TOLERANCE 3
HEADER "html/roads_header.html"
FOOTER "html/roads_footer.html"
TEMPLATE "html/roads.html"
METADATA
"DESCRIPTION" "Major Roads"
"RESULT_FIELDS" "TLID NAME CFCC FRADDL TOADDL FRADDR TOADDR
ZIPL ZIPR RTE_NUM"
END
CLASS
NAME "US Hwy"
EXPRESSION /^U/
SYMBOL "circle"
COLOR 0 0 0
SIZE 3
OVERLAYSYMBOL "circle"
OVERLAYCOLOR 0 244 0
OVERLAYSIZE 1
END
CLASS
NAME "Interstate"
EXPRESSION /^I/
SYMBOL "circle"
COLOR 0 0 0
SIZE 3
OVERLAYSYMBOL "circle"
OVERLAYCOLOR 244 0 0
OVERLAYSIZE 1
END
END
# highways
LAYER
NAME "highways"
STATUS ON
DATA "majroads"
TYPE LINE
TILEINDEX "tgrindex"
CLASSITEM "CLASS"
MAXSCALE 274999
TOLERANCE 3
HEADER "html/roads_header.html"
FOOTER "html/roads_footer.html"
TEMPLATE "html/roads.html"
METADATA
"DESCRIPTION" "Highways"
"RESULT_FIELDS" "TLID NAME CFCC FRADDL TOADDL FRADDR TOADDR
ZIPL ZIPR RTE_NUM"
END
CLASS
NAME "Interstate"
EXPRESSION /^[IU]/
SYMBOL "circle"
COLOR 0 0 0
SIZE 4
OVERLAYSYMBOL "circle"
OVERLAYCOLOR 244 0 0
OVERLAYSIZE 2
END
CLASS
NAME "Highways"
EXPRESSION /^[SC]/
SYMBOL "circle"
COLOR 0 0 0
SIZE 4
OVERLAYSYMBOL "circle"
OVERLAYCOLOR 0 244 0
OVERLAYSIZE 2
END
END
# highways
LAYER
NAME "highways"
STATUS ON
# TILEINDEX "tgrindex"
# DATA majroads
TYPE ANNOTATION
TILEINDEX "majrdtile"
CLASSITEM "CLASS"
MINSCALE 3000000
MAXSCALE 9000000
LABELITEM "RTE_NUM"
TEMPLATE "ttt.html"
CLASS
EXPRESSION /^I/
# dummy color
SYMBOL "interstate_shield"
COLOR 0 0 0
LABEL
SIZE TINY
POSITION CC
# MINFEATURESIZE 25
MINDISTANCE 150
MINFEATURESIZE AUTO
COLOR 255 255 255
PARTIALS FALSE
END
END
END
# highway annotation
LAYER
NAME "highways"
STATUS ON
# TILEINDEX "tgrindex"
# DATA majroads
TYPE ANNOTATION
TILEINDEX "majrdtile"
CLASSITEM "CLASS"
MINSCALE 275000
MAXSCALE 2999999
LABELITEM "RTE_NUM"
TEMPLATE "ttt.html"
CLASS
EXPRESSION /^U/
# dummy color
SYMBOL "us_highway_shield"
COLOR 0 0 0
LABEL
SIZE TINY
POSITION CC
# MINFEATURESIZE 25
MINDISTANCE 150
MINFEATURESIZE AUTO
COLOR 0 0 0
PARTIALS FALSE
END
END
CLASS
EXPRESSION /^I/
# dummy color
SYMBOL "interstate_shield"
COLOR 0 0 0
LABEL
SIZE TINY
POSITION CC
# MINFEATURESIZE 25
MINDISTANCE 150
MINFEATURESIZE AUTO
COLOR 255 255 255
PARTIALS FALSE
END
END
END
# highway annotation
LAYER
NAME "highways"
STATUS ON
DATA "majroads"
TYPE ANNOTATION
TILEINDEX "tgrindex"
CLASSITEM "CLASS"
MAXSCALE 274999
LABELITEM "RTE_NUM"
TEMPLATE "ttt.html"
CLASS
EXPRESSION /^I/
# dummy color
SYMBOL "interstate_shield"
COLOR 0 0 0
LABEL
SIZE TINY
POSITION CC
# MINFEATURESIZE 25
MINDISTANCE 150
COLOR 255 255 255
PARTIALS FALSE
END
END
CLASS
EXPRESSION /^U/
# dummy color
SYMBOL "us_highway_shield"
COLOR 0 0 0
LABEL
SIZE TINY
POSITION CC
# MINFEATURESIZE 25
MINDISTANCE 150
COLOR 0 0 0
PARTIALS FALSE
END
END
CLASS
EXPRESSION /^S/
# dummy color
SYMBOL "rect"
COLOR 255 205 205
OUTLINECOLOR 0 0 0
SIZE 18
LABEL
SIZE TINY
POSITION CC
OFFSET 0 3
# MINFEATURESIZE 25
MINDISTANCE 150
COLOR 0 0 0
PARTIALS FALSE
END
END
CLASS
EXPRESSION /^C/
# dummy color
SYMBOL "rect"
COLOR 255 255 255
OUTLINECOLOR 0 0 0
SIZE 18
LABEL
SIZE TINY
POSITION CC
OFFSET 0 3
# MINFEATURESIZE 25
MINDISTANCE 150
COLOR 0 0 0
PARTIALS FALSE
END
END
END
# highway annotation
And at SCALE 1:7784738 which falls into the 3-9 Mil scale range above
the html for the highway legend items looks like this:
<input type="hidden" name="layer_status[]" value="highways">
<input type="hidden" name="layer_status[]" value="highways">
<input type="hidden" name="layer_status[]" value="highways">
<tr bgcolor="#FFFFFF">
<td align="center">
<input type="checkbox" name="layer_status[]" value="highways" >
</td>
<td><img src="/web2/tmp/1033328613_22_0_20_10.gif" height=10
width=20></td>
<td><font face="Arial, Helvetica, sans-serif"
size="2">highways</font></td>
</tr>
<tr bgcolor="#FFFFFF">
<td align="center">
<input type="checkbox" name="layer_status[]" value="highways" >
</td>
<td><img src="/web2/tmp/1033328613_21_0_20_10.gif" height=10
width=20></td>
<td><font face="Arial, Helvetica, sans-serif"
size="2">highways</font></td>
</tr>
<tr bgcolor="#FFFFFF">
<td align="center">
<input type="checkbox" name="layer_status[]" value="highways"
CHECKED>
</td>
<td><img src="/web2/tmp/1033328613_20_0_20_10.gif" height=10
width=20></td>
<td><font face="Arial, Helvetica, sans-serif"
size="2">highways</font></td>
</tr>
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