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4

IF you have a view in PostGIS, you could use that as the table that you edit, so long as you only edit attributes from the master table. You could concatenate the action fields (from the one-to-many relationships) so that you have unique combination of actions to symbolize on. My point is, visualising from a view out of postgis will ensure that it's always ...


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Thanks Alex for the answer; I also found that the reason my view was not updating was simply to me loading it with the cache table option checked. Un-checking this fixed it.


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There are X and Y field for point 1 and point 2 of a gradient. And they may be linked to fields of object. They sets a relative coordinates, as a fraction of bbox height and width. So if you could calculate a distance between airport and Voronoy's cell centroid, you may calculate these fractional offsets.


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There is no built-in method to automatically classify based on two different symbols with a symbology matrix in the end. Data Defined Symbology QGIS knows the concept of data defined symbology. This allows styling different aspects of the symbology each with an expression based on a different attribute. You can write a CASE statement for the line symbology ...


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So, you have a polygon feature class where you have multiple polygons. Each polygon has a value stored in the field named Extra. You want to show polygons with unique colors. You should use the Unique values symbology in ArcMap. You can then choose what color your polygons with a certain value will show.


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I had a similar error with pseudocolor properties on macboook air mid 2011 OS x 10.10.4 This solved my problem: updated matplotlib using terminal reinstalled QGIS 2.8 Wien instead of QGIS 2.10 (http://www.kyngchaos.com/software/qgis)


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This can be accomplished by manually defining the values for the classes. After choosing the "singleband pseudocolor" renderer, now you can press the 'plus sign' just above the value window and add custom classes and change the colors. You can also just hit the classify button and then double click the populated values and change them to the desired value. ...


1

In our office (we are a state agency) Federal Highways are Blue with slight black outline on each side of the line, State Highways are Red. Farm/Ranch to Market roads (small state highways) are Black or dark gray. County roads are slightly lighter gray. If a map is zoomed in close enough for city level roads they are kept a shade of gray as well. I cant ...


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After your edit, here's a suggestion. Stop using QML and switch to SLD. When you save the SLD from QGIS, it doesn't contain the labeling (at least not in v 2.7.2). SLD is an open standard by OGC based on XML schema. See the SLD spec here. Just create your style as before but export to SLD and you can edit in Notepad (using the SLD reference). I advocate ...


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A couple of different ways. If you find out that the breaking point for 25% is lets say 10000.02343 acres, go to Layer Properties > Definition Query and enter the limiting information. Shape_Area < 100000.02343. Then set symbology. Or Similar to what you were trying already, go to Layer Properties > Symbology > Quantities > Graduated Colors. Pick ...


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Thank you so much for everyone trying to solve my problem. I finally figured out what was causing my error. It was not a syntax problem. The layer files which I was trying to use had source information in a table in a geodatabase. For some reason arcpy couldn't access it properly. I exported the source table to a shape file. Then remade the layer files so ...


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i hope this is what you are searching for : Make sure you have right path to your svg directory go to layer properties>style, on symbol layer tab change it to svg marker (on pic)



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