aside: Your messages are being held because of the attached images; here is my reply.
The challenge faced here is not particular to geoserver - it is a design challenge on how you wish to adapt your map to different environments. You can supply GeoServer with the dpi of the display used (have openlayers pass this information in as a format option) . GeoSerer will adjust the sizes appropriately. Much of the other information is available as env variables for use when styling. Reference: - https://docs.geoserver.org/latest/en/user/services/wms/vendor.html?highlight=dpi#format-options - https://docs.geoserver.org/latest/en/user/styling/sld/extensions/substitution.html#sld-variable-substitution On Thu, Sep 8, 2022 at 8:17 AM Julien Robitaille <robitail...@ogsl.ca> wrote: > Hello! > I found out that the difference in size from one zoom level to another one > comes from openlayers. > > But in any cases, what I would like to do is to increase the sizes of the > arrows, so it is easier to see. The problem is that the display of those > arrows depends a lot on whether the user uses a computer or a smartphone. > Here is an example. The first picture is from my computer, and the second > one is from my phone. > As you can see, the resolution of the arrows is not the same, even at the > approximate same zoom level. > > (images removed) > > As you can see, increasing the size of the arrows would make the app > unreadable on the phone. > Does anyone know how to address this problem? Is it something that can be > fixed by geoserver, or is it more of an openlayers' problem? > > Thanks a lot for your help! > Julien > > Le mar. 6 sept. 2022 à 10:08, Olivier Gagnon <mcno...@hotmail.com> a > écrit : > >> Hi Julien (je suis aussi du Québec) ! >> >> Have you tried using a fixed value for the Size attribute ? >> >> ex: <Size>8</Size> >> >> As I can see in your sld, the size is modified using the Categorize >> function. >> >> Hope this helps. Good Luck! >> >> Olivier >> >> Envoyé à partir d’Outlook <http://aka.ms/weboutlook> >> >> ------------------------------ >> *De :* Julien Robitaille <robitail...@ogsl.ca> >> *Envoyé :* 6 septembre 2022 08:53 >> *À :* geoserver-users@lists.sourceforge.net < >> geoserver-users@lists.sourceforge.net> >> *Objet :* [Geoserver-users] proper use of sld to display wms layer >> >> Hello! >> I have a raster layer that displays surface currents. Everything works >> great, but there are some details that I wish to get rid of but dont know >> how to. >> Below, the two pictures show what the layer looks like at a different >> zoom level. The first one is zoomed out compared to the second one. As >> you can see, the arrows are smaller on the second one. I wish it wasnt like >> this. I'm trying to make it so that the arrows stay the same size. >> I've tried to play around with the wms_scale_denominator property in my >> sld, but it doesnt seem to do the trick. >> >> (images removed) >> >> Here is my SLD: >> >> <?xml version="1.0" encoding="ISO-8859-1"?> >> <StyledLayerDescriptor version="1.0.0" >> xsi:schemaLocation="http://www.opengis.net/sld >> StyledLayerDescriptor.xsd" >> xmlns="http://www.opengis.net/sld"; >> xmlns:ogc="http://www.opengis.net/ogc"; >> xmlns:xlink="http://www.w3.org/1999/xlink"; >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> >> <NamedLayer> >> <Name>currents</Name> >> <UserStyle> >> <Title>currents</Title> >> <FeatureTypeStyle> >> <Transformation> >> <ogc:Function name="ras:RasterAsPointCollection"> >> <ogc:Function name="parameter"> >> <ogc:Literal>data</ogc:Literal> >> </ogc:Function> >> <ogc:Function name="parameter"> >> <ogc:Literal>interpolation</ogc:Literal> >> <ogc:Literal>InterpolationBilinear</ogc:Literal> >> </ogc:Function> >> </ogc:Function> >> </Transformation> >> <Rule> >> <Title>Heading</Title> >> <PointSymbolizer> >> <Graphic> >> <Mark> >> <WellKnownName>extshape://narrow</WellKnownName> >> <Fill> >> <CssParameter name="fill"> >> <ogc:Function name="Categorize"> >> <ogc:Function name="sqrt"> >> <ogc:Add> >> <ogc:Mul> >> <ogc:PropertyName>u</ogc:PropertyName> >> <ogc:PropertyName>u</ogc:PropertyName> >> </ogc:Mul> >> <ogc:Mul> >> <ogc:PropertyName>v</ogc:PropertyName> >> <ogc:PropertyName>v</ogc:PropertyName> >> </ogc:Mul> >> </ogc:Add> >> </ogc:Function> >> <ogc:Literal>#e0e2e6</ogc:Literal> >> <ogc:Literal>0.514</ogc:Literal> >> <ogc:Literal>#96ade4</ogc:Literal> >> <ogc:Literal>1.03</ogc:Literal> >> <ogc:Literal>#376AE2</ogc:Literal> >> <ogc:Literal>1.542</ogc:Literal> >> <ogc:Literal>#249D53</ogc:Literal> >> <ogc:Literal>2.056</ogc:Literal> >> <ogc:Literal>#F98308</ogc:Literal> >> <ogc:Literal>2.57</ogc:Literal> >> <ogc:Literal>#F91A08</ogc:Literal> >> </ogc:Function> >> </CssParameter> >> <CssParameter name="fill-opacity"> >> <ogc:Function name="Categorize"> >> <ogc:Function name="sqrt"> >> <ogc:Add> >> <ogc:Mul> >> <ogc:PropertyName>u</ogc:PropertyName> >> <ogc:PropertyName>u</ogc:PropertyName> >> </ogc:Mul> >> <ogc:Mul> >> <ogc:PropertyName>v</ogc:PropertyName> >> <ogc:PropertyName>v</ogc:PropertyName> >> </ogc:Mul> >> </ogc:Add> >> </ogc:Function> >> <ogc:Literal>0</ogc:Literal> >> <ogc:Literal>0.001</ogc:Literal> >> <ogc:Literal>1</ogc:Literal> >> <ogc:Literal>1000</ogc:Literal> >> <ogc:Literal>0F</ogc:Literal> >> </ogc:Function> >> </CssParameter> >> </Fill> >> </Mark> >> <Size> >> <ogc:Function name="Categorize"> >> <!-- Value to transform --> >> <ogc:Function name="sqrt"> >> <ogc:Add> >> <ogc:Mul> >> <ogc:PropertyName>u</ogc:PropertyName> >> <ogc:PropertyName>u</ogc:PropertyName> >> </ogc:Mul> >> <ogc:Mul> >> <ogc:PropertyName>v</ogc:PropertyName> >> <ogc:PropertyName>v</ogc:PropertyName> >> </ogc:Mul> >> </ogc:Add> >> </ogc:Function> >> <ogc:Literal>13</ogc:Literal> >> <ogc:Literal>0.514</ogc:Literal> >> <ogc:Literal>13</ogc:Literal> >> <ogc:Literal>1.03</ogc:Literal> >> <ogc:Literal>16</ogc:Literal> >> <ogc:Literal>1.542</ogc:Literal> >> <ogc:Literal>19</ogc:Literal> >> <ogc:Literal>2.056</ogc:Literal> >> <ogc:Literal>22</ogc:Literal> >> <ogc:Literal>2.57</ogc:Literal> >> <ogc:Literal>25</ogc:Literal> >> </ogc:Function> >> </Size> >> <Rotation> >> <ogc:Function name="toDegrees"> >> <ogc:Function name="atan2"> >> <ogc:PropertyName>u</ogc:PropertyName> >> <ogc:PropertyName>v</ogc:PropertyName> >> </ogc:Function> >> </ogc:Function> >> </Rotation> >> </Graphic> >> </PointSymbolizer> >> </Rule> >> </FeatureTypeStyle> >> </UserStyle> >> </NamedLayer> >> </StyledLayerDescriptor> >> >> >> >> >> Thanks a lot for your help! >> -- >> >> Julien Robitaille >> Scientifique de données >> Data scientist >> En télétravail - Working from home >> >> Visitez notre site web pour en savoir plus sur notre campagne de >> communication en cours! >> Visit our website to learn more about our ongoing communication campaign! >> > > > -- > > Julien Robitaille > Scientifique de données > Data scientist > En télétravail - Working from home > > Visitez notre site web pour en savoir plus sur notre campagne de > communication en cours! > Visit our website to learn more about our ongoing communication campaign! > > _______________________________________________ > Geoserver-users mailing list > > Please make sure you read the following two resources before posting to > this list: > - Earning your support instead of buying it, but Ian Turton: > http://www.ianturton.com/talks/foss4g.html#/ > - The GeoServer user list posting guidelines: > http://geoserver.org/comm/userlist-guidelines.html > > If you want to request a feature or an improvement, also see this: > https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer > > > Geoserver-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geoserver-users > -- -- Jody Garnett
_______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
