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4

One way to create dual line symbols that reflect a field value is to use a Proportional Symbol. To set it up for a dual line proportional symbol first choose "Proportional symbols" under the Quantities category within the "Show:" group box. Set the "Value:" in the Fields group to your width field. Make sure the "Unit:" combobox is set to the correct ...


4

In the attribute view create your new columns as decimal (floats). Then enable editing, and use expressions to update the columns. To get the latitude (x-coordinate) of the start of a line feature, use the expression x_at(0). To get the end of a line feature use x_at(-1). Repeat for your longitudes (y-coordinates). You select the column, type in the ...


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You have your four columns: X-start; Y-start; X-end; Y-end. Using the field calculator for each column update using: $x_at(0) $x_at(-1) $y_at(0) $y_at(-1) This asks for the coordinate at the start of the line (the zero) and the end of the line (the negative one). This will provide you with a decimal latitude and longitude, so ensure the columns are ...


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This Animated maps with point data tutorial should be a good starting point for you. In general taking a careful look on the tutorials available on the academy is a good idea to start working with CartoDB.


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The QGIS NNJoin plugin should be able to help you, but it will generate a new point layer and not update your existing point layer. See https://plugins.qgis.org/plugins/NNJoin/ and http://arken.nmbu.no/~havatv/gis/qgisplugins/NNJoin/. Use your point layer as "Input vector layer" and your line layer as "Join vector layer". The result is a new point vector ...


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you can use feature to line if you have an advanced licence (which is the case if you have split line at point). Below is a snapshot of the feature to line help in ArcGIS.


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Here is a method I came up with, with the help of some friends, using Model Builder and Gephi. Step 1 ArcModel creating table of links/edges (adding nodes at every line overlap if desired) Step 2 Gephi import of links/edges then adding component IDs Step 3 ArcModel adds component IDs back to original line Step 1 Takes all the input features splits them at ...


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Thanks a lot Midavolo! Unfortunately, I don't have access to the Water Utility Network Editing and Analysis toolbars (which as you say has a Rotation to Features tool that populates a ROTATION field with the orientation of a line, which you can then use to rotate your symbols for each point). However, you got me thinking that if a tool can read the direction ...


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From what I understand from your question, I think you're trying to split a road segment based on To/From attributes you have in an excel file. You're on the right track with the snipper. The first thing you should do is use the MeasureGenerator transformer. You can create a measure for each road in your dataset. I suggest using a unique identifier in the ...



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