By resolution, do you mean the dpi resolution? Or maybe the "resolution" of my raster layer (size of georeferenced cells)? The best way to play with the concentration of arrows that I found was to play with the wms_scale_denominator. So I thought I could make two different sld styles, one for computers, and another one for smartphones, with different values of wms_scale_denominator. And depending on the screen size and/or resolution of screen of the user, one of the two styles would be applied to the layer. Thanks again, Julien
Le jeu. 8 sept. 2022 à 18:16, Jody Garnett <jody.garn...@gmail.com> a écrit : > Please remember to include the user list (so others can answer you) and > yeah sorry it does not support pictures. > > Where is the resolution of your raster determined? > > Jody > > On Thu, Sep 8, 2022 at 12:31 PM Julien Robitaille <robitail...@ogsl.ca> > wrote: > >> hello, >> As a follow up, I would just need another specification. >> Here is the rendering when the dpi is set to 200: >> >> And here is the rendering when set to 60: >> > > As you can see, the resolution of the image didnt change (same number of >> arrows for the same zoom level). Only the size of the arrows have. >> Is it the expected result? What I am looking for is a way to decrease >> resolution for specific user cases. >> Thanks again! >> Julien >> >> Le jeu. 8 sept. 2022 à 12:22, Jody Garnett <jody.garn...@gmail.com> a >> écrit : >> >>> 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 >>> >> >> >> -- >> [image: OGSL Logo] <https://ogsl.ca/> >> Julien Robitaille >> Scientifique de données >> Data scientist >> En télétravail - Working from home >> [image: Facebook Logo] <https://www.facebook.com/ogsl.slgo/> [image: >> Twitter Logo] <https://twitter.com/ogsl_slgo/> [image: LinkedIn Logo] >> <https://www.linkedin.com/company/observatoire-global-du-saint-laurent---ogsl/?viewAsMember=true/> >> 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! >> [image: signature-campagne] >> <https://ogsl.ca/fr/news/au-coeur-des-donnees/> >> > -- > -- > Jody Garnett > -- [image: OGSL Logo] <https://ogsl.ca/> Julien Robitaille Scientifique de données Data scientist En télétravail - Working from home [image: Facebook Logo] <https://www.facebook.com/ogsl.slgo/> [image: Twitter Logo] <https://twitter.com/ogsl_slgo/> [image: LinkedIn Logo] <https://www.linkedin.com/company/observatoire-global-du-saint-laurent---ogsl/?viewAsMember=true/> 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! [image: signature-campagne] <https://ogsl.ca/fr/news/au-coeur-des-donnees/>
_______________________________________________ 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
