[mapserver-users] HTML Legend with Status Checking...
Mike Smith
nospam at cnrit.tamu.edu
Tue Oct 1 15:42:56 EDT 2002
LAYER
NAME Parima_Surveyhouseholds
GROUP Region
TYPE Point
STATUS off
DATA parima_surveyhouseholds
HEADER 'parima_surveyhouseholds.shp_header.html'
TEMPLATE parima_surveyhouseholds.shp_query.html
CLASS
MINSCALE 20136780
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 5
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
CLASS
MINSCALE 10068390
MAXSCALE 20136779
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 8
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
CLASS
MINSCALE 5034193
MAXSCALE 10068389
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 11
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
CLASS
MINSCALE 0
MAXSCALE 5034192
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 15
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
END # LAYER
Martin, Daniel wrote:
> Could you provide the map file definition for the Parima Survey
> Households layer?
>
>
>
> Thanks,
>
> Dan
>
> -----Original Message-----
> From: Mike Smith [mailto:nospam at cnrit.tamu.edu]
> Sent: Tuesday, October 01, 2002 11:56 AM
> To: Martin, Daniel
> Cc: mapserver-users at lists.gis.umn.edu
> Subject: Re: [mapserver-users] HTML Legend with Status Checking...
>
> Same thing. Now I don't have group header bars seperating my
> layers, but all the layers still show up and when I click on a
> layer that has scale-specific classes, the symbols for all scales
> still show up. By the way, I'm on Mapserver 3.6.1 and here's the
> page to go to if you want to see what I'm talking about:
>
> http://cnrit.tamu.edu/maps/map_init.html
>
> Click on the very last button on that page (the one that says
> "FRAMES VERSION" on it). When the map shows up, expand the
> "Regional" folder on the left-hand side to display those layers.
> The one that I'm working on right now is called "Parima Survey
> Households". Click on that layer to load it into the map, then
> you'll see the various symbols I'm referring to show up in the
> legend. I represent the Parima households with red triangle
> symbols and I have different sized triangles depending on how far
> zoomed in you are so that they are small at a high scale and
> larger as you zoom in...but I don't want all versions of that
> symbol to show up in my legend all the time...just the one that's
> in scale.
>
> Thanks again!
>
> Martin, Daniel wrote:
>
>> Try this. Take out the leg_group_html section, and the
>> leg_layer_html section, leaving only the leg_class_html section.
>> Take them out entirely - don't leave an empty set of tags. Then,
>> let me know what happens.
>>
>>
>>
>> -Dan
>>
>> -----Original Message-----
>> From: Mike Smith [ mailto:nospam at cnrit.tamu.edu ]
>> Sent: Tuesday, October 01, 2002 11:33 AM
>> To: Martin, Daniel
>> Cc: mapserver-users at lists.gis.umn.edu
>> Subject: Re: [mapserver-users] HTML Legend with Status
>> Checking...
>>
>> Gladly. Here is my legend code:
>>
>> [leg_group_html]
>> <tr>
>> <td colspan=3
>> bgcolor=#cccccc><b>[leg_group_name]</b></td>
>> </tr>
>> [/leg_group_html]
>>
>> [leg_layer_html]
>> [/leg_layer_html]
>>
>> [leg_class_html]
>> <tr>
>> <td width=15> </td>
>> <td>
>> <img src="[leg_icon width=15 height=15]" width=15
>> height=15>
>> </td>
>> <td>
>> [leg_class_name]
>> </td>
>> </tr>
>> [/leg_class_html]
>>
>>
>> However, it does not work as you say (and as the
>> documentation on the web page says!). Layers that are "off"
>> do not show up (that's as expected and what I want), that's
>> fine, but layers that are out of SCALE DO show up, and that's
>> not as expected and that's not as the documentation states
>> and that's NOT what I want. For example, I have a layer
>> called Ethiopia_Rivers...here's what it looks like:
>>
>> LAYER
>> NAME "Ethiopia_Rivers"
>> TYPE LINE
>> STATUS off
>> GROUP Ethiopia
>> DATA "ethiopia_rivers"
>> HEADER 'ethiopia_rivers.shp_header.html'
>> CLASS
>> MAXSCALE 8710165
>> Name 'Ethiopia Rivers'
>> COLOR 102 204 255
>> TEMPLATE ethiopia_rivers.shp_query.html
>> END # CLASS
>> END # LAYER
>>
>> Now, when I'm viewing my map at full extent, my scale factor
>> is 1: 20136789, therefore if I click on the Ethiopia_Rivers
>> layer at that zoom level, nothing shows up in the map. This
>> is the exact behavior that I would expect...I'm out of scale
>> for that layer, so it doesn't show up in the map until I zoom
>> in. The PROBLEM, however, is that the "Ethiopia Rivers" icon
>> and label pop up in my legend...this is counter-intuitive,
>> contrary to the documented behavior of Mapserver, and just
>> flat-out frustrating! If the layer is not showing up in my
>> map (because it's out of scale), then it should NOT be in my
>> legend either. Grrrr!!! Pardon me for sounding bitter...I'm
>> not lashing out at you, I'm very grateful for your help, I'm
>> just frustrated at Mapserver.
>>
>> Thanks!
>>
>> Martin, Daniel wrote:
>>
>>>Perhaps I misunderstood. By default (no opt_flag set) layers that are out
>>>of scale and layers that have a STATUS off will not show in an HTML legend.
>>>
>>>
>>>A legend exactly like this should do exactly what it sounds like you want:
>>>
>>>[leg_class_html]
>>><TR>
>>> <TD>
>>> <img src="[leg_icon]" border=0>
>>> </TD>
>>> <TD>
>>> <font face="arial" size=2>[leg_class_name]</font>
>>> </TD>
>>></TR>
>>>[/leg_class_html]
>>>
>>>I'm not sure why you are having trouble getting the default action. Perhaps
>>>you could provide your current legend.
>>>
>>>-Dan
>>>
>>>-----Original Message-----
>>>From: Mike Smith [mailto:nospam at cnrit.tamu.edu]
>>>Sent: Tuesday, October 01, 2002 10:59 AM
>>>To: Martin, Daniel
>>>Cc: mapserver-user!
>>>s at li!
>>>
>>>sts.gis.u
>>>mn.edu
>>>Subject: Re: [mapserver-users] HTML Legend with Status Checking...
>>>
>>>
>>>Thank you, but this didn't change a thing. Actually, let me correct
>>>that...it had a negative effect because now all my layers show up too,
>>>even if they are not displayed in the map. I want only active layers to
>>>show in the legend and I want only IN-SCALE class symbols to show up in
>>>the legend, I don't want 4 symbols to show up in the legend for every
>>>layer that I have which has scale-specific classes...I just don't guess
>>>I can do that without converting everything over to Mapscript. X-(
>>>
>>>Any other ideas?
>>>
>>>Martin, Daniel wrote:
>>>
>>>>You probably want a bit mask of 2 in your opt_flag. Layers with STATUS off
>>>>still show, but layers out of scale don't show.
>>>>
>>>>[leg_layer_html opt_flag=2]
>>>>
>>>>
>>>>Per http://mapserver.gis.umn.edu/doc36/html-legend-howto.html :
>>>>
>>>>1: If set, show layer even if out of scale (default: hide layers out of
>>>>scale).
>>>>
>>>>2: If set, show layer even if status is OFF (default: hide layers with
>>>>STATUS OFF).
>>>>
>>>>4: If set, show layer even if type is QUERY (default: hide layers of TYPE
>>>>QUERY)
>>>>
>>>>8: If set, show layer even if type is ANNOTATION (default: hide layers of
>>>>TYPE ANNOTATION)
>>>>
>>>>
>>>>In my experience, opt_flag=2 is the most intuitive.
>>>>
>>>>-Dan
>>>>
>>>>
>>>>
>>>>-----Original Message-----
>>>>From: Mike Smith [mailto:nospam at cnrit.!
>>>>tamu!
>>>>.edu]
>>>>Sent: Mo
>>>>nday, September 30, 2002 5:06 PM
>>>>To: mapserver-users at lists.gis.umn.edu
>>>>Subject: [mapserver-users] HTML Legend with Status Checking...
>>>>
>>>>
>>>>Hello,
>>>>
>>>> I've seen how you can make legends using PHP Mapscript that check to
>>>>see whether a layer or class is in scale before displaying it in the
>>>>legend, but no mention of how to do this if I'm not using Mapscript. I
>>>>have sub-classed many of my layers so that symbols show up in different
>>>>sizes depending on how far zoomed in you are. In other words, I'm using
>>>>"MINSCALE" and "MAXSCALE" in my classes, but all of my classes show up
>>>>in the legend and that's really annoying! I want ONLY the in-scale
>>>>symbol to show up in the legend as it does in the map...any tips on how
>>>>to do this without Mapscript? I see the "if" conditional statements in
>>>>the HTML Legend How-to, but!
>>>> there's no status o
>>>>f "SCALE" to
>>>>check with
>>>>those statements... if I could put an if statement in my legend template
>>>>that checked whether or not a class or layer was in scale, then I'd be
>>>>in business...any way to do this?
>>>>
>>>>Thanks!
>>>>
>>>>
>>>
>>>
>>>
>>
>
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