AW: AW: [udig-devel] Shapefiles, marks and zoom
Paul Ramsey
pramsey at refractions.net
Tue Nov 7 06:58:43 PST 2006
Avoiding this cleanly ultimately may require some extra care on our
part: if the date on a qix or fix is < the date on the shp or dbf,
they need to be regenerated, just in case.
P
On 7-Nov-06, at 2:45 AM, Schneider, Michael wrote:
> Hi!
>
> Jesse, thank you for your support. Finally I found the cause for my
> 2nd problem myself (the one with marks shown only in certain scales):
>
> The shapefiles created in my program always have the same name, but
> different contents. So when I used one in uDIG, created another one
> (with the same name), showed that new one, I got that problem, because
> I did not delete the .qix and .fix files!
> Because of this, uDIG showed the (new) marks correctly for certain
> scales and had to fail after a certain zoom in.
>
> That's what I learnt: Delete the qix and fix files when modifying
> the shapefile!
>
> Michael
>
> PS: Jesse, I'll send you to xml files (together with the shapefile)
> by mail as the original problem (all marks shown, but only one gif
> file) still exists.
>
> Von: udig-devel-bounces at lists.refractions.net [mailto:udig-devel-
> bounces at lists.refractions.net] Im Auftrag von Jesse Eichar
> Gesendet: Montag, 6. November 2006 18:37
> An: User-friendly Desktop Internet GIS
> Betreff: Re: AW: [udig-devel] Shapefiles, marks and zoom
>
> You can email me an example of your shapefile and I can look into
> it. But please email it to me personally and not to the list.
> jeichar at refractions.net
>
> Cheers,
>
> Jesse
>
> On 6-Nov-06, at 2:06 AM, Schneider, Michael wrote:
>
>> Jesse,
>>
>> thank you for the quick replies to my questions and for the sld
>> file. The only diff in your file to the one I was using is the
>> path to the image. As the problems appear even when not using a
>> sld file at all, but when using the Simple style in the style
>> editor I think that I have problems with the dbf file which must
>> be there using shapefiles.
>>
>> As mentioned before I create the shp and shx by my program. The
>> ESRI documentation about shapefiles does not say much about the
>> dBase file. Therefore I used and modified an existing dbf file
>> (which I got together with another shapefile).
>>
>> Using uDIG with a shapefile, index file, and dbf file from another
>> source no such problems occur.
>> So I think this is not a problem of the sld file, but with my dbf
>> file. (Does anybody know more about how that file has to look like?)
>>
>> But why does this only happen at a certain scale: Zooming in the
>> marks disappear at a certain scale, zooming out, they reappear
>> exactly when crossing the same scale?
>> Perhaps I should have a closer look to org.geotools.
>>
>> Cheers
>> Michael
>>
>> Von: udig-devel-bounces at lists.refractions.net [mailto:udig-devel-
>> bounces at lists.refractions.net] Im Auftrag von Jesse Eichar
>> Gesendet: Freitag, 3. November 2006 18:33
>> An: User-friendly Desktop Internet GIS
>> Betreff: Re: [udig-devel] Shapefiles, marks and zoom
>>
>> Use my SLD as a template and let me know if you still have
>> problems. I tried it out and it seems to be working.
>>
>> Jesse
>>
>> On 3-Nov-06, at 6:07 AM, Schneider, Michael wrote:
>>
>>> Hi again,
>>>
>>> in addition to my mail some hours ago I found that I also have
>>> problems when using sld:Mark (see my earlier mail) or when I do
>>> not use any sld file at all:
>>> The marks disappear when zooming in to a certain amount.
>>>
>>> This is part of the sld file I'm using, so that should not be the
>>> reason:
>>>
>>> <sld:MaxScaleDenominator>1.7976931348623157E308</
>>> sld:MaxScaleDenominator>
>>> The scale when the marks disappear is not always the same for a
>>> certain set of marks. One time all marks disappear when zooming
>>> in deeper than 1:2 Mio., another time they disappear not before
>>> zooming in to 1:750000.
>>>
>>> I also noticed that the marks disappear during panning when
>>> because of panning the zoom reaches the above mentioned value.
>>>
>>> All that happens even when I only have 1 mark.
>>>
>>> I did not see anything about that in the shapefile specs. I
>>> specify a bounding box with x and y set, but z and M (measure)
>>> set to 0. And ZoomToLayer works fine for the shapefile layer.
>>>
>>> Is there anything to pay attention at with respect to the dbf
>>> file? What else might be wrong with me?
>>>
>>> Any hints welcome, cheers
>>> Michael
>>>
>>>
>>>
>>> Von: udig-devel-bounces at lists.refractions.net [mailto:udig-devel-
>>> bounces at lists.refractions.net] Im Auftrag von Schneider, Michael
>>> Gesendet: Freitag, 3. November 2006 10:31
>>> An: User-friendly Desktop Internet GIS
>>> Betreff: [udig-devel] Shapefiles and sld:ExternalGraphic
>>>
>>> Hi,
>>>
>>> I'm using uDIG 1.1 RC4 and in my program I create a shapefile of
>>> type MultiPoint (shape type 8). Using this shapefile with uDIG
>>> works fine as long as I use a sld file with sld:Mark: All of my
>>> about 50 points are shown.
>>>
>>> But when I try to use a sld file with sld:ExternalGraphic only 1
>>> of those is shown although more than 1 are in the range of the
>>> viewport. When that one currently shown is not in the viewport
>>> anymore (because of panning or zooming in) another one is shown.
>>> But as I said always only 1 at a time is displayed.
>>>
>>> Here are the diffs of the two sld files:
>>>
>>> Vergleichen von (<)D:\Projekte\uDIG\data\pin.sld (2310l Byte)
>>> mit (>)D:\Projekte\uDIG\data\hits.sld (3959l Byte)
>>>
>>> 25,28c25,55
>>> < <sld:ExternalGraphic>
>>> < <sld:OnlineResource
>>> xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple"
>>> xlink:href="file:/D:/Projekte/uDIG/data/pin.gif"/>
>>>
>>> < <sld:Format>image/gif</sld:Format>
>>> < </sld:ExternalGraphic>
>>> ---
>>> > <sld:Mark>
>>> > <sld:WellKnownName>x</
>>> sld:WellKnownName>
>>> > <sld:Fill>
>>> > <sld:CssParameter name="fill">
>>> > <ogc:Literal>#FF0000</
>>> ogc:Literal>
>>> > </sld:CssParameter>
>>> > <sld:CssParameter
>>> name="fill-opacity">
>>> > <ogc:Literal>0.75</
>>> 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>1.0</
>>> ogc:Literal>
>>> > </sld:CssParameter>
>>> > <sld:CssParameter
>>> name="stroke-width">
>>> > <ogc:Literal>2.0</
>>> ogc:Literal>
>>> > </sld:CssParameter>
>>> > <sld:CssParameter
>>> name="stroke-dashoffset">
>>> > <ogc:Literal>0.0</
>>> ogc:Literal>
>>> > </sld:CssParameter>
>>> > </sld:Stroke>
>>> > </sld:Mark>
>>> 33c60
>>> < <ogc:Literal>75.0</ogc:Literal>
>>> ---
>>> > <ogc:Literal>20.0</ogc:Literal>
>>>
>>> Any hints where I do something wrong?
>>>
>>> Cheers
>>> Michael
>>>
>>> _______________________________________________
>>> User-friendly Desktop Internet GIS (uDig)
>>> http://udig.refractions.net
>>> http://lists.refractions.net/mailman/listinfo/udig-devel
>>> _______________________________________________
>>> User-friendly Desktop Internet GIS (uDig)
>>> http://udig.refractions.net
>>> http://lists.refractions.net/mailman/listinfo/udig-devel
>>
>> _______________________________________________
>> User-friendly Desktop Internet GIS (uDig)
>> http://udig.refractions.net
>> http://lists.refractions.net/mailman/listinfo/udig-devel
>
> _______________________________________________
> User-friendly Desktop Internet GIS (uDig)
> http://udig.refractions.net
> http://lists.refractions.net/mailman/listinfo/udig-devel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.refractions.net/pipermail/udig-devel/attachments/20061107/6fb22bc0/attachment-0001.html
More information about the udig-devel
mailing list