A graph is a representation of a set of objects where some pairs of the objects are connected by link

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2
votes
1answer
46 views

Converting Historical Railroad Systems Data from KML?

I'm writing a paper for an undergraduate economic history class and I'm interested in North American railways in the 1800's. I've found historical GIS data for the period here. The railroad data are ...
3
votes
0answers
284 views

Make Graph (Data Management), Changing item names in legend [closed]

I'm having python produce a multi-series graph. How do you change the series name in the legend, the default being Vertical Bar, Vertical Bar1, Vertical Bar2.... ...
0
votes
1answer
28 views

How to add Simple 3d Bar Graph on top of 2d Feature class in ArcMap

I am trying to add a simple bar graph on top of a map in ArcMap. The idea is very simple, to calculate x,y (suppose building area vs building name) and create a bar graph of it. This can easily be ...
3
votes
2answers
500 views

What software would be useful to create General Transit Feed Specification (GTFS)?

I am doing a project in which i am required to create GTFS. I look at transit google developer forum which provide a format to create feed but that completely have to done by hand (we have to write ...
6
votes
3answers
1k views

Find a proper path between two nodes in a grid

This question is about finding a proper path (route) between two nodes (P,Q) in a grid (i.e., graph, network, ...). In our concept, we define a path proper (nice) if it is the most similar* to the ...
2
votes
0answers
138 views

Plot the Shortest Paths in a Grid without any clash at a point of time

The efficient algorithm needs to be done and proved for the best solution for the given problem: User inputs: (#) Size of the NxN Grid. (N); (#) No. of Paths: Z; (#) Source and Destination ...
1
vote
0answers
18 views

Sort Field in Pie Charts

I'm working on a class project where we make a pie chart out of an attribute table. The attributes are geologic layers (UNITNAME), and the area they occupy (area_pct). In the "Create Graph Wizard", ...
0
votes
1answer
40 views

How to generate histograms of multiple fields?

I have a large shapefile and I'm trying to automate a process to generate histograms of several fields with the MakeGraph tool, but I'm receiving the following error. class ...
1
vote
0answers
32 views

GeoJSON to routing graph

What are the best automated ways of placing the nodes and edges of a routing graph using the GeoJSON data of a multi-level building? What other data is needed (area layout, accessor directions etc)?
0
votes
0answers
55 views

How to embed ArcMap graph into winforms dialog using .NET/C# and ArcObjects?

I am creating an addin for ArcMap in csharp and want to add a graph to a dialog. The native arcgis graph control doesn't seem to been available from the visual studio toolbox. I can't figure out ...
2
votes
1answer
268 views

How to create a x-y scatterplot from attributes in QGIS 2.0?

There are a few old packages that allow the creation of x-y scatter plots from attributes in vector data (Scattergram for 1.7) http://plugins.qgis.org/plugins/scattergrammidentify/ (SPQR for very ...
1
vote
0answers
34 views

How do I generate a drainage area-slope scatter plot from ASTER GDEM data

I have ASTER GDEM catchment data. I've installed the TauDEM tool. How do I generate a Drainage Area-Slope scatter plot?
0
votes
1answer
29 views

Create multiple bar graphs out of a single data table

I have data for obesity rates and alcohol consumption for 20 different countries, all in the same data table. I want to create 20 separate bar graphs, which I can then place over each country to show ...
0
votes
0answers
21 views

Create city connectivity network from OSM

How does one go about creating a city connectivity network from OSM data? For example, city A has a road connecting it to road B, thus nodes A and B have an edge between them.
2
votes
2answers
43 views

Formula for charting a course around the globe, given a location and degree heading?

I'm looking for a formula that takes a long/lat coordinate and a degree heading, (e.g. "I'm standing in San Francisco and I'm facing 45º from north"), and which can draw a line across a map projecting ...
2
votes
0answers
83 views

How to extract polygons from a road network?

I need to extract faces (or polygons) from my road network and calculate their areas. I mainly use Arcpy packages but even if you know it in QGIS APIs, I'd appreciate if you'd share it with me. If it ...
0
votes
1answer
236 views

Using Z and M feature geometry to create line graph in ArcPy/Python?

I am a Python (v2.6.5) noob trying to plot a series of 3D polylines into graphs. So far I've come up with: # Import system modules import arcpy, os, sys, string from arcpy import env ...
1
vote
1answer
1k views

Using Dijkstra's algorithm for multiple source to single destination shortest paths

I'm going over a lecture recording, in it my professor mentions using Dijkstra's algorithm (or a modified version of it) to find multiple-source to single source shortest paths, e.g. finding the ...
2
votes
0answers
320 views

On using R data with ArcPy to make histogram in ArcMap

I am writing a tool in python which passes parameters to a R script, which in turn creates a DBF file. I read this DBF and want to make a histogram out of the data inside ArcMap as one of the results ...
0
votes
1answer
41 views

Exporting ArcMap produced layer file histogram?

I could simply take a screenshot, or reproduce it in other software, but what I see when I go to layer properties>symbology>classify is perfect for what I need. The only thing is it would be nice ...
2
votes
0answers
100 views

ArcPy Add Graph Window

The arcpy MakeGraph_management tool suggests that a graph is stored via an in_memory representation that can be either: added to the host app or saved using SaveGraph_management. The graph appears ...
2
votes
2answers
160 views

Why is arcpy.StackProfile_3d -> arcpy.SaveGraph_management creating empty graph?

In a python script I'm trying to save a graph to a .png file with graph output from arcpy.StackProfile_3d but the .png file shows an empty graph. The table created from arcpy.StackProfile_3d shows ...
6
votes
1answer
349 views

Accessing graph in ArcMap document using ArcPy?

I am trying to access an existing graph in an ArcMap document with arcpy. I know how to create a new graph with arcpy, but I cannot seem to figure out how to access an existing graph in an ArcMap ...
1
vote
0answers
105 views

Displaying graph with value scale on Y axis using ArcGIS for Desktop?

I have to symbolize my vector layer with Bar Graph in ArcGIS for Desktop. Along with the graph i have to display value scale on y Axis. Is this possible? I am using ArcGIS 10.2 for Desktop but ...
6
votes
1answer
402 views

What are the existing datasets of world maritime routes?

I have a list of cargo ports of all over the world and need to show some port-to-port trips on a map, and also to compute lengths of these trips. For that, I need a dataset of actual maritime routes ...
0
votes
1answer
116 views

Loading graph (.grf fle) into MXD using ArcPy?

I have hundreds of pairs of FGDB and associated MXD files. I need to insert a graph in each mxd linked to its corresponding FGDB. No problem creating graph, but stuck on how to get graph into mxd ...
2
votes
0answers
63 views

How to add nodes into graph

I'm new to qgis and in here I want to find a path between two selected points on the map(Roads-vector layer). The points are selected by the user, using mouse clicks. So here I used the astar ...
5
votes
1answer
169 views

How to filter the graph on which I want to find the shortest path

I have a large graph that contains edges of Europe. I want to calculate the shortest path between two points on this graph with pgRouting that have a function pgr_trsp for shortest path calculations. ...
1
vote
1answer
597 views

Can't select layer in the Road Graph plugin QGIS

I'm trying to use the Road Graph plugin in QGIS 2.2.0. I have tried a few line shape files, but it won't let me select the layer (the option is greyed out). I've tried adding a 'SPEED' field and a ...
1
vote
1answer
217 views

How to create graph out of two layers using ArcGIS 10.1 for Desktop?

I would like to create a graph of two layers I have. on one hand its the land price of a certain area and on the other a layer with a crime rate. first of all, the layer with the land prices doesnt ...
0
votes
1answer
89 views

Softwar to draw graph from a OSM map

This is my first time asking here so forgive me if something isn't appropriate, and sorry if my English isn't very good. Im new in OSM, I have downloaded the data of my map from OSM using the JOSM ...
2
votes
0answers
65 views

Generating Tiles for Non Geographic Datasets [closed]

Excuse my ignorance if this exists. I don't think I've seen a website ever using something like this. Have tools been developed that use general tiling methodology to implement non-geographical data ...
3
votes
2answers
618 views

How to rotate external graphic using mouse in Openlayers?

I would like to rotate externalGraphic using mouse something like this URL. In this URL polygon is used to rotate it but I want an image to be rotated using external graphics tag. Any help is ...
2
votes
1answer
228 views

Using histogram in ArcGIS 10 with dates and sum of values

I have a point feature layer in ArcGIS. I want to add a histogram which shows a histogram for selected points. This works perfectly. Two problems: I have a datefield, which spans about three years. ...
1
vote
0answers
187 views

Drawing a road network: offsetting overlapping lines (directed graph)

Say I have a road network defined by a table, indicating, for each arc, its ID, and its head and tail node. In other words, my network is defined as a directed graph. For example, we have two points, ...
2
votes
0answers
53 views

What graph traversal algorithm should I use?

I would like to write an algorithm which can traverse a graph and hopefully later I can implement it to use for an indoor navigation system. The graph would come from floor plans of a building and the ...
2
votes
1answer
159 views

Creating pop-ups on point layers

i have a postgresql database which is refreshed all 10 minutes and i need to create graphs in pop-up with the data. When i click, a pop-up (or annotation ?) appears. How can i make it possible ? ...
0
votes
1answer
780 views

How to build a Spatialite road network from OSM data

I'm looking for algorithm which could help me with building my own road network (for routing) from OSM data. I chose Spatialite DB for this, but here I have only one problem: Spatialite provides ...
4
votes
1answer
497 views

Problem: Arcpy Graph function empty graph output

Background: I have some python code that I need help with parameter passing into the MakeGraph_management arcpy function. I would like to create a two-series vertical line graph for every pair of ...
3
votes
1answer
202 views

Bar graph - cartodiagram in QGIS

Can I create a cartodiagram in QGIS 1.7.3? I need one bar graph in every territorial unit of one layer. It must vizualize organization on X and number of research in one organisation. Is it possible? ...
1
vote
0answers
173 views

Adding charts to OpenGeo suite SDK

I just wanted to gauge the work flow for adding charts to a map using the SDK that comes with OpenGeo suite. I know it seems a vague question I'm just trying to get my head around it :/ So far the ...
1
vote
1answer
40 views

What each stack element does

Im using the opengeo stack, and want to double check my understanding of each element. PostGIS - The database for storing my data GeoServer - The link between the online part / the database Here's ...
1
vote
0answers
65 views

About symbol position

I have to draw in ArcGis a graph which has the end points of each segment with a circle. The circle has to be unique at the same point when two or more end points are coincident. I’m using the font ...
3
votes
3answers
513 views

Visualization of a big graph in 3D from postgresql/postgis

We have a graph in 3D in a PostgreSQL/PostGIS database. It contains something like 50'000 edges and 50'000 vertices, with x-y coordinates and floors. We would like to visualize this graph with ...
2
votes
1answer
138 views

arcgis graph vs .net graph

I am trying to show some elevation/cross section data in a graph. I am trying to do this in arcgis graphs. But because of my previous graph work was in .net, I found arcobjects.net API for graphing is ...
1
vote
0answers
167 views

How to extract an adjacency matrix from OSM?

I would like to use graph algorithms from the Boost graph library on OSM data. What are my choices to use Openstreetmaps data from within a C++ program ? I need at least a flat file with a list of ...
1
vote
1answer
156 views

Display mouse position from graph on a map

i need to develop a web application which shows a map, that displays a GPS Route. So far I can do this using Openlayers or ArcGIS Server. Now I want to add an interactive graph below the map. In this ...
1
vote
1answer
386 views

Data Driven Pages, Graphs, and selections in ArcMap 10.1

Is it possible in python to create a selection set based on the extent from a Data Driven Page (DDP)? I have a layout view with a map and a graph. The graph is set to only plot the selected set of ...
6
votes
2answers
267 views

How can I turn a vector layer into a graph G = (V, E)?

I have a number of rail networks, in the form of shapefiles of the "line" type. I want to turn them into a more abstract graph format, i.e. the kind with vertices and edges, not chart-type graphs. ...
4
votes
1answer
787 views

Elevation graph from GPX file

I've got many GPX files in the following format: <?xml version="1.0" encoding="utf-8"?> <gpx xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ...