Hi Peppe,

I don't know this area very well, but I feel always divided between sld which is the only standard I know but quite complex and maybe not well suited for all situations, and non portable solutions.

The only work I did in this area is for the ViewManager plugin, because I also needed a simple way to serialize Styles and SLD did not appeared well suited to me (or maybe too complex). I created a new way to serialize styles with jaxb. Not all styles can be serialize yet though. I'm not sure I made the right decisions (using jaxb vs java2xml, using a format different from sld and different from openjump jmp files, etc.). Just want to make you know that I tried to address a problem which is not very far from yours with this extension.

If you have some ideas to make all these works converge toward one format (sld ?) or 2 formats (sld + oj) with some reusable components, you're welcome.  If you have already some working code adding new capabilities that SLD and ViewManager plugins have not, you're also welcome ;-).

Michaël


Le 29/11/2018 à 12:01, Giuseppe Aruta a écrit :
Hi Michaël
thanks for the answer.
Images for color theming: Maybe it is connected to XBasicStyle changes: as I can understand Import SLD recognize all these images as separate Basic Styles. I found also the even exporting a "Basic" color theming on polygons (only plain colors by attribute. No pattern, no images), even if loading style is applied correctly, the style displayed by the polygons is not correct, darker, as the BasicStyle is drawn on the top of the different XBasicStyles. Luckely it is possible to solve it reusing the Theming plugin to restore the real colors

Indeed my scope is to find a good way to share layer styles between users who work on the same project but with differents areas (in my case, it is a common situation between a teem of field geologists). I possible find a solution to my scope. I realized tha Java2XML is quite flexible. Using this class I made some methods to export/import jump style (in the standard Jump XML format) which bypass some issues on sld. A Jump XML is not an universal "language" but, at least, it reaches my scope (if all field geologist uses OJ) -  Anyhow,  other GIS: Kosmo, GvSIG and QGIS, it seems to me that a full compatibility is still (or was still) missing between different softwares on SLD

This new JUMP export/import style will be completely portable: also the images files, used by styles, will be saved in a folder together with the style XML file. Adnd these imags will be searched and read when an user try lo load a style file on another computer. A step ahead considering that all SLD exporter don't have this option as they are used for local (local computer) or computer to web (*) action I will add these capabilities on this weekend as two new plugins (import Style/Export Style).
To be moore precise:
A) The export plugin will open a JFileChooser where the user can choose to export style  either to SLD or to this new Jump XML style format. B)  the import plugin will be able to import either to SLD or to this new Jump style format. C) All  those methods will be set on org.openjump.core.apitools.IOTools class, in order to resume even from other plugins or to be controlled/modified in the future D) SLD code will not be changed, right now, except I will duplicate the export process (as method) to bypass the JFileChooser. E) those new plugins (import Style/Export Style) will substitute Import Style as SLD/Export style as SLD plugins

Best regards
Peppe

(*) (http://www.ricercasit.it/public/documenti/Dottorato/Formazione%20interna%20dottorandi/GIS%20Open%20Source%20e%20Web%20-%20Claudio%20Schifani/Servizi_Web_OGC.pdf)


Il giorno dom 25 nov 2018 alle ore 19:23 Michaël Michaud <m.michael.mich...@orange.fr <mailto:m.michael.mich...@orange.fr>> ha scritto:

    Hi Peppe,

    Did you fill a ticket to track these bugs ?

    Some hints :
    A few years ago, I created XBasicStyle which extends BasicStyle
    and wraps VertexStyle
    in order to make Vertex Style available in ThemingStyle. Maybe
    some bugs are related to this
    change which has not been ported to SLDPlugIn.

    If the path of images are not saved with a correct URL, the
    problem may come from XSLUtility which
    has a few methods used by layerstyle2sld.xsl to read/write URL.
    ImageFillPattern seems to use geIconURL which itself uses a URL
    method. I don't know why some
    methods of this utility class use URL.toString() and others
    URL.toExternalForm for example...

    Michaël




    Le 25/11/2018 à 10:27, Giuseppe Aruta a écrit :
    I can be more accurate on { ColorThemingStyle for polygons with
    some fill patterns seems not working}
    Polygon fill pattern are samples are saved as temp image files
    like "ojp5731593574799380314pti.png"
    On saving to SLD file the relative path of the file is saved as
    tag (in windows)
    <OnlineResource xlink:type="simple"
    xlink:href="file:/C:/Users/<Urer>/AppData/Local/Temp/
    jp5731593574799380314pti.png "/>
    When I try to load, the SLD import cannot recognize it and throws
    an error message in the log file (An ogc:filter could not be
    found while trying to parse a color theming style).
    Peppe

    Il giorno ven 23 nov 2018 alle ore 16:24 Giuseppe Aruta
    <giuseppe.ar...@gmail.com <mailto:giuseppe.ar...@gmail.com>> ha
    scritto:

        Hi
        it seems that sld import/export has some faults. According to
        an user's mail (I recived) it was not possible to load text
        symbology on a layer.
        While waiting a more complete info (and opening a bug
        ticket), I did some (partial) tests. This is what I found:
        - Save: vertex symbology from external image file is not
        saved into the xml file. The tag <sld:ExternalGraphic> is not
        recorded even if it is present into the layerstyle2sld.xsl
        file template
        - Load: vertex symbologies applied as ColorThemingStyle are
        decoded as multiple BasicStyle. Thus is not easy to apply a
        styling according to an attribute classification
        - Load: strangelly Labeling works fine. labels are located
        anyhow at the center of the geometry.
        - Load. ColorThemingStyle for polygon works only if user uses
        base fill colors.
        ColorThemingStyle for polygons with some fill patterns seems
        not working
        - Load both line color and line pattern seem to work.
        I remember years ago everyting seemed to work fine
        (http://ojwiki.soldin.de/index.php?title=Import-Export_Layer_Style).
        I wonder if this is connecte external libraries.

        Good news: the method  new Java2XML().write(layer, "layer",
        stringWriter) controls the way to export style (both on
        project file and partially on sld file).
        I thing I will implement an alternative way to export/import
        style to file using this method.

        Best regards
        Peppe





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