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

learn more… | top users | synonyms

1
vote
0answers
11 views

Create profile graph over multiple rasters (ArcGIS 3D Analyst)

When having a raster which represents an array of values, for instance, elevation, I can generate a profile graph over a line I draw using the 3D Analyst toolbar. A sample graph: When generating a ...
-1
votes
0answers
26 views

Selecting all pixels from Pixel Inspector?

While using the Pixel Inspector, whenever I click "copy all values" it only copies values that you can see on the screen. Anyone know a solution? I need all the values to count the number of times ...
1
vote
1answer
32 views

Extracting coordinates of a triangulation from DEM data

I'm working on the succinct representation of planar graphs and now I'm trying to obtain some datasets to test my results. I saw that Delaunay triangulations of elevation data can be a good source of ...
0
votes
0answers
27 views

Comparing Population Pyramid - Fixed or dynamic X-axis?

I have prepared an interactive visualization for Population Pyramid of G-20 countries from 1990 to 2100 using United Nations 2015 Revision of World Population Prospects data. However, in order to ...
2
votes
1answer
45 views

OSM Reverse Geocoding - Find closest node for Coordinates

currently I am experimenting with Neo4j as Database for OSM Data. In the end I'd like to do routing stuff. I had a look at the Neo4j/spatial, but this is to blown up for me (not optimized for ...
0
votes
1answer
30 views

pgrouting - topology creation with explicit node file

Learning pgrouting, I would like to build a simple public transport routing engine. Starting with a simple metro network (DC in my case, see excerpt below), I would like to combine the line ...
1
vote
0answers
49 views

Dynamic Profile Graph for Data Driven Page Atlas

I used Strip Map Index Features tool to create a Data Driven Page set of maps and I would need to create a new data frame that will contain a dynamic profile graph that will be modify depending on ...
0
votes
0answers
15 views

Putting shapefile into spplot graph?

I have a spplot with a kriging but I need to put a shapefile into this spplot? How can I do that? I could obtain this with a intersection but I just need the shapefile over this.
4
votes
4answers
136 views

Creating best fit line from point data using ArcGIS for Desktop?

I have GPS points that show the locations of surface bubbles from a research dive along a transect. Wind, waves, and currents have conspired to add error to these data. I want to create a single best ...
1
vote
1answer
57 views

Create common vertex where line was snapped to another using “snap to segment”

I have a schematic diagram within QGIS consisting of a single layer of line segments. Lines have been snapped to others using "snap to segment". When using the snap to segment option the two lines ...
0
votes
2answers
52 views

How to attach a graph to a point feature class?

Is there any way to attach a graph to every point in a feature class? When I click to identify a point in my map I want it to show me the characteristics from attribute table (as it actually shows) ...
1
vote
0answers
59 views

Why is the Spatial Analyst toolbar graph different to Graphs>Create Graph?

I'm using ArcGIS 10.3 and want to look at elevation vs frequency of each elevation for a DEM. There seems to be two ways to create this graph: Use the "Create histogram" tool on the Spatial Analyst ...
0
votes
1answer
41 views

ESRI layer files to directed graph?

I am pretty new to ArcGIS and would like to extract GPS coordinates of nodes as well as the length of all edges connecting those nodes from some ESRI layer files ...
0
votes
1answer
28 views

Is possible to make a graph in Arc that can act like a Pivot graph.

I have not really used Graphs in Arc that much. I was wondering if it possible to make a graph that can be interactively changed to the selections that are input into it. Ideally something like a ...
4
votes
2answers
103 views

QGIS create a line graph with attributes value on a section through the map

I wonder if I can make cross sections of GIS data (other than height). An example: I have a shapefile of a city with building plots and attribute values of the plot size. I want to choose a random ...
0
votes
0answers
73 views

How to rotate a simple 3d Bar graph in ArcMap 10.3

I want to show a series of data on one chart in ArcGIS. Is there an option to rotate a simple 3d graph on ArcMap? I attach a 2 values example without rotation.
0
votes
1answer
165 views

Getting time taken for the edge using GraphHopper map matching

Here is the GPX data I am giving to GraphHopper Map matching library: private List<GPXEntry> getList() { List<GPXEntry> sampleEntries = new ArrayList<GPXEntry>(); GPXEntry ...
1
vote
1answer
127 views

Why doesn't QGIS 2.8.2 Road Graph accept my road network vector?

I'm using the Finnish official Department of Transport's "digiroad" road network vector file, which has all kinds of roads, cycle paths etc on it, but I can't use Road Graph on it. If I create a new ...
1
vote
0answers
33 views

An algorithm that could find a random cycle in a graph

I am looking for an algorithm that could find a random cycle in a graph from a node while that cycle is traversing around another nodes (area). For example, from the green star on the left of the ...
6
votes
0answers
156 views

Can GRASS compute the line graph representation of an input graph?

I'm interested in computing a line graph for an input graph, preferably in GRASS since I'll be using other GRASS network analysis tools afterwards. I couldn't find any reference to line graphs in the ...
0
votes
0answers
29 views

Re-opening and changing 3d profile graph in ArcGIS for Desktop?

I have a question regarding 3d profile graphs. I know how to save these outputs, but is there any way to re-open and change things (e.g. x, y labels and things like that). I understand that they ...
0
votes
0answers
63 views

Arcpy MakeGraph “Parameters are not valid”

I have a Python add-in that should create a graph based on the location ID of a water quality testing station. The user clicks on the point and a relevant graph should be created in the layout window. ...
1
vote
2answers
276 views

Can I plot this “diagram” in matplotlib [closed]

I am not sure weather that is the right stackexchange here. I want to grade a diagram like this: http://matplotlib.org/examples/shapes_and_collections/scatter_demo.html Unfortunately, I have no idea ...
0
votes
1answer
71 views

Page definition query not updating graph in layout

I have three graphs in my layout created from feature classes which have Page Definitions set to reference a data driven page. The table of each feature class shows the correct number of features as ...
1
vote
0answers
57 views

Postgis - st_MakeLine and st_lineLocatePoint

Lets explain, I have 4 points (1,2,3,4), and I need to visit clients (A, B, C, D). So, I need to use st_makeline with (1,2,3,4,3)... Now I have to get % position from A,B,C,D; but in visit order. ...
2
votes
1answer
119 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 ...
0
votes
1answer
488 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 ...
1
vote
0answers
35 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", ...
1
vote
0answers
98 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
131 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 ...
1
vote
0answers
66 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
91 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
1answer
110 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 ...
2
votes
2answers
67 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
132 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
101 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
182 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 ...
1
vote
0answers
280 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 ...
7
votes
1answer
2k 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
383 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 ...
0
votes
2answers
229 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
97 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 ...
2
votes
2answers
303 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 ...
1
vote
1answer
448 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 ...
1
vote
1answer
831 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 ...
3
votes
1answer
633 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 ...
0
votes
1answer
148 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
74 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 ...
1
vote
0answers
289 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
73 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 ...