[mapserver-users] Angle Follow will accept only simple linestring don't MultiLinestring ?
Andrea Peri
aperi2007 at gmail.com
Wed Aug 14 01:47:04 PDT 2013
Hi,
I do other tests.
Using instead of a spatialite, a shapefile.
And accessing it using ogr or using ogr driver.
I see the error trigger when use spatialite or shapefile accessed using the
OGR driver.
Instead it don't trigger when use a directly defined Feature or the
mapserver direct shapefile driver.
Regards,
Andrea.
2013/8/14 Andrea Peri <aperi2007 at gmail.com>
> Yes.
>
> Is the OFFSET !
>
> Yes Thomas when I remove the offset the angle follow will work without
> error.
>
> I have other informations:
>
> he error trigger on spatialite but don't in a simpe FEATURE text definet
> dataset.
> Infact with this dataset:
>
> LAYER
> NAME "line"
> TYPE LINE
> STATUS DEFAULT
> EXTENT 1662112.76 4858445.22 1666743.13 4860849.91
> FEATURE
> WKT "LINESTRING(1662112.755029 4859495.405004, 1662172.424828
> 4859710.216279, 1662357.401204 4859984.697353, 1662411.104022
> 4860175.640708, 1662345.467244 4860318.848225, 1662172.424828
> 4860473.989701, 1662178.391808 4860670.900037, 1662321.599324
> 4860796.206614, 1662619.948317 4860849.909432, 1662888.462411
> 4860837.975473, 1663174.877444 4860611.230238, 1663222.613283
> 4860384.485003, 1663145.042545 4860247.244467, 1662977.967109
> 4860056.301111, 1662769.122814 4859841.489836, 1662709.453015
> 4859680.38138, 1662810.891673 4859435.735206, 1663091.339726 4859250.75883,
> 1663371.78778 4859137.386213, 1663813.344289 4859143.353192, 1663992.353685
> 4859256.72581, 1664093.792343 4859513.305944, 1664028.155564
> 4859829.555876, 1663765.60845 4860038.400171, 1663664.169793
> 4860193.541648, 1663652.235833 4860390.451983, 1663771.57543
> 4860545.593459, 1664081.858383 4860599.296278, 1664410.042275
> 4860581.395339, 1664779.995027 4860402.385943, 1664988.839322
> 4860133.871849, 1665078.34402 4859919.060574, 1665114.145899
> 4859644.579501, 1665114.145899 4859423.801246, 1665132.046838
> 4859214.956951, 1664947.070463 4859077.716414, 1664947.070463
> 4858862.905139, 1665263.320395 4858725.664602, 1665615.372207
> 4858731.631582, 1665764.546703 4858916.607958, 1665830.183482
> 4859214.956951, 1665824.216502 4859567.008762, 1665728.744824
> 4859925.027554, 1665639.240126 4860223.376547, 1665633.273147 4860503.8246,
> 1665716.810865 4860670.900037, 1665961.457039 4860760.404734,
> 1666253.839052 4860760.404734, 1666492.518246 4860617.197218,
> 1666659.593682 4860408.352923, 1666743.1314 4860098.06997, 1666713.296501
> 4859811.654937, 1666635.725763 4859638.612521, 1666474.617307
> 4859519.272924, 1666295.607911 4859465.570105, 1666229.971132
> 4859435.735206, 1665979.357978 4859262.69279, 1666009.192878
> 4859065.782454, 1666301.574891 4858886.773058, 1666546.221065
> 4858862.905139, 1666623.791803 4858707.763663, 1666576.055964
> 4858516.820307, 1666176.268314 4858445.216549)"
> END #FEATURE
> LABELCACHE on
> CLASS
> STYLE
> COLOR 200 200 200
> OUTLINECOLOR 0 255 0
> END
> LABEL
> TEXT 'BLAH BLAH'
>
> COLOR 0 85 255
> OUTLINECOLOR 212 255 255
> OUTLINEWIDTH 1
> FONT "LiberationSans-Regular"
> #FONT "Calibri"
>
> TYPE truetype
> SIZE 9
> ANGLE FOLLOW
> OFFSET 15 99
> POSITION auto
> PRIORITY 10
> MAXOVERLAPANGLE 180.0
> BUFFER 1
> FORCE OFF
> PARTIALS FALSE
> MINDISTANCE 200
> END
> END #CLASS
> END
>
>
> The error don't happen.
>
> Instead if I transfer this exact dataset in a spatialite (4.1.1) and apply
> an
> angle follow
> with an offset
>
> the error trigger immediatly when the
> box clip will create a multilinestring.
>
> However removing the
> OFFSET setting the error don't trigger.
>
> please notice I'm using spatialite 4.1.1 and gdal 1.10.
>
> Regards,
>
> Andrea.
>
>
>
> 2013/8/14 thomas bonfort <thomas.bonfort at gmail.com>
>
>> Andrea, can you confirm if you are having the error when you remove
>> the label offset ?
>>
>> On 14 August 2013 09:37, Andrea Peri <aperi2007 at gmail.com> wrote:
>> > Hi,
>> >
>> > My theory is not true.
>> >
>> > I was able to create a featureset that like my image that will work
>> when
>> > the visible box clip it creating a multilinestring..
>> >
>> > sorry for noise,
>> >
>> > My quest still go on.
>> >
>> > Regards,
>> >
>> >
>> >
>> >
>> > 2013/8/13 Andrea Peri <aperi2007 at gmail.com>
>> >>
>> >> Hi,
>> >> Perhaps I found the explanation.
>> >>
>> >> The "angle follow" with OGR is using the
>> >> BufferBuilder::bufferLineSingleSided
>> >> That function seem don't work with a MultiLinestring . It necessary
>> need a
>> >> simple linestring.
>> >>
>> >> The question is that sometime the simple linestirng when is clipped
>> from
>> >> the visible bbox of the map to render, is transformed in a
>> MultiLinestring.
>> >> As showed in attached image.
>> >>
>> >> So a linestring geometry clipped by the visible bbox will become a
>> >> multilinestring geometry and the bufferLineSingleSided will give error
>> to
>> >> put a "follow angle".
>> >>
>> >> Andrea.
>> >>
>> >> 2013/8/13 Andrea Peri <aperi2007 at gmail.com>
>> >>>
>> >>> ok, thx.
>> >>> I change to multiple scale.
>> >>>
>> >>> However I do a rapid check removing a label component, but the
>> problem is
>> >>> still here.
>> >>>
>> >>> Now I rewrite a more exact mapfile using two classes.
>> >>>
>> >>> Andrea.
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> 2013/8/13 thomas bonfort <thomas.bonfort at gmail.com>
>> >>>>
>> >>>> yes, that's incompatible. use multiple scale-dependant classes for
>> now
>> >>>>
>> >>>> On 13 August 2013 18:26, Andrea Peri <aperi2007 at gmail.com> wrote:
>> >>>> > The two label are at different max/min scaledenominator.
>> >>>> > The goal is to have little label size at low scales and bigger font
>> >>>> > size at
>> >>>> > bigger scales.
>> >>>> >
>> >>>> > However only one lable is active at one scale level.
>> >>>> >
>> >>>> > Is this incompatible with "follow" ?
>> >>>> >
>> >>>> >
>> >>>> >
>> >>>> > 2013/8/13 thomas bonfort <thomas.bonfort at gmail.com>
>> >>>> >>
>> >>>> >> why the double label? they seem to be the same, but in any case
>> >>>> >> multiple labels are not supported for FOLLOW.
>> >>>> >>
>> >>>> >> On 13 August 2013 18:08, Andrea Peri <aperi2007 at gmail.com> wrote:
>> >>>> >> > I'm using spatialite 4.1.1,
>> >>>> >> > so use ogr to access the db.
>> >>>> >> >
>> >>>> >> > LAYER
>> >>>> >> > NAME "rt_topogr.50k.etichette.topon_idro_50k"
>> >>>> >> > STATUS OFF
>> >>>> >> > EXTENT 1554750.74 4678325.52 1771722.76 4924791.90
>> >>>> >> > TYPE LINE
>> >>>> >> > CONNECTIONTYPE OGR
>> >>>> >> > CONNECTION "/path-to-spatialite/zz_topografica.sqlite"
>> >>>> >> > DATA "select PK_UID_2, TOPO_OK, GEOMETRY from
>> topon_idro_50k"
>> >>>> >> > PROJECTION
>> >>>> >> > "+init=epsg:3003 +towgs84=0,0,0,0,0,0,0"
>> >>>> >> > END
>> >>>> >> > METADATA
>> >>>> >> > "wms_title" "topon_idro_50k"
>> >>>> >> > "wms_extent" "1554750.74 4678325.52 1771722.76 4924791.90"
>> >>>> >> > END
>> >>>> >> > LABELCACHE ON
>> >>>> >> > MAXSCALEDENOM 60100
>> >>>> >> > MINSCALEDENOM 1
>> >>>> >> > CLASS
>> >>>> >> > NAME ''
>> >>>> >> > MAXSCALEDENOM 60100
>> >>>> >> > MINSCALEDENOM 1
>> >>>> >> > LABEL
>> >>>> >> > TEXT '[TOPO_OK]'
>> >>>> >> > COLOR 0 85 255
>> >>>> >> > OUTLINECOLOR 212 255 255
>> >>>> >> > OUTLINEWIDTH 1
>> >>>> >> > MAXSCALEDENOM 60100
>> >>>> >> > MINSCALEDENOM 40100
>> >>>> >> > FONT "LiberationSans-Regular"
>> >>>> >> > TYPE truetype
>> >>>> >> > SIZE 7
>> >>>> >> > ANGLE FOLLOW
>> >>>> >> > OFFSET 15 99
>> >>>> >> > POSITION auto
>> >>>> >> > PRIORITY 10
>> >>>> >> > MAXOVERLAPANGLE 180.0
>> >>>> >> > BUFFER 1
>> >>>> >> > FORCE OFF
>> >>>> >> > PARTIALS FALSE
>> >>>> >> > MINDISTANCE 200
>> >>>> >> > END
>> >>>> >> > LABEL
>> >>>> >> > TEXT '[TOPO_OK]'
>> >>>> >> > COLOR 0 85 255
>> >>>> >> > OUTLINECOLOR 212 255 255
>> >>>> >> > OUTLINEWIDTH 1
>> >>>> >> > MAXSCALEDENOM 40100
>> >>>> >> > MINSCALEDENOM 1
>> >>>> >> > FONT "LiberationSans-Regular"
>> >>>> >> > TYPE truetype
>> >>>> >> > SIZE 9
>> >>>> >> > ANGLE FOLLOW
>> >>>> >> > OFFSET 15 99
>> >>>> >> > POSITION auto
>> >>>> >> > PRIORITY 10
>> >>>> >> > MAXOVERLAPANGLE 180.0
>> >>>> >> > BUFFER 1
>> >>>> >> > FORCE OFF
>> >>>> >> > PARTIALS FALSE
>> >>>> >> > MINDISTANCE 200
>> >>>> >> > END
>> >>>> >> > END
>> >>>> >> > END
>> >>>> >> >
>> >>>> >> >
>> >>>> >> >
>> >>>> >> >
>> >>>> >> > 2013/8/13 thomas bonfort <thomas.bonfort at gmail.com>
>> >>>> >> >>
>> >>>> >> >> there's something strange in your error message... the
>> >>>> >> >> singleSidedBuffer stuff is in GEOS, and should have nothing to
>> do
>> >>>> >> >> in
>> >>>> >> >> msOGRFileNextShape. post your whole mapfile layer.
>> >>>> >> >>
>> >>>> >> >> On 13 August 2013 17:42, Andrea Peri <aperi2007 at gmail.com>
>> wrote:
>> >>>> >> >> > Hi,
>> >>>> >> >> >
>> >>>> >> >> > I tested trasforming the multilinestring dataset in a
>> linestring
>> >>>> >> >> > dataset
>> >>>> >> >> > but
>> >>>> >> >> > the error is still here.
>> >>>> >> >> >
>> >>>> >> >> > msDrawMap(): Image handling error. Failed to draw layer named
>> >>>> >> >> > 'rt_topogr.50k.etichette.topon_idro_50k'.
>> >>>> >> >> >
>> >>>> >> >> > msOGRFileNextShape(): OGR error. IllegalArgumentException:
>> >>>> >> >> > BufferBuilder::bufferLineSingleSided only accept linestrings
>> >>>> >> >> >
>> >>>> >> >> > So it is not really due to a multilinestring vs linestring
>> >>>> >> >> > question.
>> >>>> >> >> >
>> >>>> >> >> > The quest carry on.
>> >>>> >> >> >
>> >>>> >> >> >
>> >>>> >> >> >
>> >>>> >> >> > 2013/8/13 Andrea Peri <aperi2007 at gmail.com>
>> >>>> >> >> >>
>> >>>> >> >> >> Hi,
>> >>>> >> >> >>
>> >>>> >> >> >> Try.ing to set a label on a MULTILINESTRING dataset.
>> >>>> >> >> >>
>> >>>> >> >> >> I set a label with Follow capability.
>> >>>> >> >> >>
>> >>>> >> >> >> ANGLE FOLLOW
>> >>>> >> >> >>
>> >>>> >> >> >> But I'm having this error:
>> >>>> >> >> >>
>> >>>> >> >> >> msOGRFileNextShape(): OGR error. IllegalArgumentException:
>> >>>> >> >> >> BufferBuilder::bufferLineSingleSided only accept linestrings
>> >>>> >> >> >>
>> >>>> >> >> >> Is the Follow compatible with a MultiLinestring dataset or
>> need
>> >>>> >> >> >> only
>> >>>> >> >> >> simple linestrings ?
>> >>>> >> >> >>
>> >>>> >> >> >> Thx,
>> >>>> >> >> >>
>> >>>> >> >> >> --
>> >>>> >> >> >> -----------------
>> >>>> >> >> >> Andrea Peri
>> >>>> >> >> >> . . . . . . . . .
>> >>>> >> >> >> qwerty àèìòù
>> >>>> >> >> >> -----------------
>> >>>> >> >> >
>> >>>> >> >> >
>> >>>> >> >> >
>> >>>> >> >> >
>> >>>> >> >> > --
>> >>>> >> >> > -----------------
>> >>>> >> >> > Andrea Peri
>> >>>> >> >> > . . . . . . . . .
>> >>>> >> >> > qwerty àèìòù
>> >>>> >> >> > -----------------
>> >>>> >> >> >
>> >>>> >> >> > _______________________________________________
>> >>>> >> >> > mapserver-users mailing list
>> >>>> >> >> > mapserver-users at lists.osgeo.org
>> >>>> >> >> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
>> >>>> >> >> >
>> >>>> >> >
>> >>>> >> >
>> >>>> >> >
>> >>>> >> >
>> >>>> >> > --
>> >>>> >> > -----------------
>> >>>> >> > Andrea Peri
>> >>>> >> > . . . . . . . . .
>> >>>> >> > qwerty àèìòù
>> >>>> >> > -----------------
>> >>>> >
>> >>>> >
>> >>>> >
>> >>>> >
>> >>>> > --
>> >>>> > -----------------
>> >>>> > Andrea Peri
>> >>>> > . . . . . . . . .
>> >>>> > qwerty àèìòù
>> >>>> > -----------------
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> --
>> >>> -----------------
>> >>> Andrea Peri
>> >>> . . . . . . . . .
>> >>> qwerty àèìòù
>> >>> -----------------
>> >>
>> >>
>> >>
>> >>
>> >> --
>> >> -----------------
>> >> Andrea Peri
>> >> . . . . . . . . .
>> >> qwerty àèìòù
>> >> -----------------
>> >
>> >
>> >
>> >
>> > --
>> > -----------------
>> > Andrea Peri
>> > . . . . . . . . .
>> > qwerty àèìòù
>> > -----------------
>>
>
>
>
> --
> -----------------
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -----------------
>
--
-----------------
Andrea Peri
. . . . . . . . .
qwerty àèìòù
-----------------
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