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Questions tagged [flow-map]

A map designed to show the direction and/or volume of a resource moving between origins and destinations. Note this tag is for the cartographic representation of such data.

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Mapping human migration using ArcGIS Pro and ArcGIS Online? [closed]

I am trying to make a migrations map using Esri (ArcGIS Pro or AGOL). I managed to make a Flow Map, but what I am actually looking for is an interactive tool such as this example https://elpais.com/...
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2answers
225 views

Adjusting flow map styles in QGIS 2

In one project, I am trying to adopt marvellous styles for flow maps created by @underdark a.k.a. Anita Graser. At this moment I have the following output Shapefile was created with the usage of ...
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1answer
33 views

ArcMap Flow Map lines get cut off

I am new to GIS and am doing a global flowmap using ArcMap 10.6. The flow lines from East Asia/West Pacific to the NE USA should cut off in the mid-Pacific (on far right of map) but instead continue ...
2
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0answers
285 views

Creating a flow graph in QGIS 3.4

I attempting to make flow graph in QGIS 3.4, some thing like I have found several 'ways to do it' in QGIS 2.xx eg QGIS2.0 method I known its possible to get a line with arrows by just change the ...
2
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1answer
409 views

Flow map with QGIS 3 [closed]

I've used QGIS for many years and made great flow maps. But within QGIS 3 I can't find any flow making plugin like the ones in QGIS 2.X versions. Do you know how to do?
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1answer
100 views

Selecting or highlighting upstream elements

I would like to use the information from the Swedish SMHI related with their hydrological model elements (catchment areas) that have a Containment hierarchy structure, each element has the information ...
1
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1answer
427 views

How to offset lines in QGIS that share the same origin and destination

I have a set of lines in QGIS that represent travel between destinations. Some of these lines of travel overlap - for example, traveling from Rome to Paris, and then back to Rome, and then on to ...
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2answers
152 views

Creating a flow map from individuals' home and work place locations?

I have to do a flow map (home->working place) for my area of interest (28 french cities). I get a database .dbf created by a french institute. I imported it into postgres/postgis. One row = 1 people. ...
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0answers
124 views

show relations between polygons by highlighting polygons

Is it possible to show relations (for example traffic flow) between polygons (for example counties) by highlighting related polygons by doing a query on a start polygon using QGIS? Here is an ...
3
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0answers
293 views

How to calculate the distances to outlet along the flow path ?

I have created these raster files for a river basin: DEM Flow Direction Flow Accumulation I like to genereate a layer how it is shown in the picture below. I need the values for the distances from ...
3
votes
1answer
625 views

Legend of Flow Direction calculated with processing toolbox QGIS (SAGA)

I tried to figure out the legend of the output for flow direction when I use the QGIS processing toolbox function from SAGA (Channel network and drainage basin). I get a raster with values from 0 to 7....
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2answers
907 views

Longest Flow Path in QGis

From a DEM of a watershed, how is possible to calculate the longest flow path? I know this questions has been asked before but I haven't found a complete solution yet.
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0answers
203 views

QGIS flowmapper migration arrows from origin X to destination X - possible?

I have a question about QGIS with the Flowmapper plugin. I am trying to visualize some real estate data. I have data about consumers who are actively searching for housing and what I want to visualize ...
3
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1answer
307 views

How do I separate/visualize polylines that overlap? (Show them next to each other)

I have a network of polylines between multiple nodes. All nodes are connected with lines in a two-way system (A->B and B->A). I want to show all the lines at the same time, but the problem is that ...
1
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1answer
157 views

Inputting Multiple XY Data from a .csv file in ArcMap to Create Flow Lines

I am doing a project where I need to create a flow map in ArcMap 10.4.1. I have imported the data from an Excel spreadsheet that I put together. The problem I am having is that when I Create A ...
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0answers
90 views

Multiple flow distance rasters produce low distance values along catchment boundary [closed]

My problem makes use of ArcGIS tools generally and Spatial Analyst in particular, but my question has more to do with hydrological modelling and working with DEMs. My goal is to obtain flow distance ...
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0answers
65 views

Zip codes, Geo coding, Joining/relating

I have a file of Tennessee zip codes and another excel file including 600,000 origin and destination addresses with zip codes and trip purposes. Since I cannot Geocode all 600,000 addresses, I ...
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1answer
214 views

Export shapefile of a flow map with arrows indicating their direction in R

How can I insert arrows on flows and export flows map with arrows indicating their direction in R? I know that I can use the arrows command of the maptools library to "print" an arrow in line with ...
3
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0answers
80 views

QGIS - Flowmapper uses only first node

Running on QGIS 2.14.2 for Mac OS X. I installed Flowmapper and prepared the three files required in txt format (node coordinates, node names, matrix). Flowmapper imports the files OK through its ...
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0answers
107 views

Map library supporting linestring curve rendering to produce flow map

Is there some function/plugin for any javascript map library (OL, leaflet, ArcGIS API for JS) to render WFS or Geojson LineStrings not as simple line but as curves? I want to make mobility flow maps ...
3
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1answer
454 views

FlowMapper plugin Error in QGIS 2.12.0 Lyon

I have a problem using FlowMapper plugin. But I don't now why. This is the message: Traceback (most recent call last): File ".../python/plugins\FlowMapper\flowmapper.py", line 2656, in run flowpyv07....
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0answers
91 views

How can I run QGIS Flowmapper in batch mode?

I installed and used the Flowmapper plugin in QGIS. It works perfect. However, I have numerous matrices that I need to create desire lines. Doing it one by one is pretty tedious so I wanted to run ...
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1answer
1k views

Creating flow map with matrix table using QGIS?

I have a map http://prntscr.com/95zoyh and also data in a table (matrix table ) and I would like to have a map with different weight arrows depending of the data. Is that possible to do using QGIS?
2
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1answer
191 views

Flow Mapping Data?

I have recently started experimenting with QGIS's flow mapping functionality. I am having trouble finding any origin/destination data online and I'm hoping someone can help? It can be for anything. ...
5
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2answers
2k views

How to create flow maps in Qgis

I have several records from a survey and would like to show flow map from places mentioned in the survey. I have all places mentioned georeferenced and some records mentioned no places and others ...
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0answers
450 views

Representation of road networks at junctions when line width is varying with attribute [closed]

I have a road network and for every road segment the average number of daily traffic. I need to draw a map where the line width for each road segment is proportional to the daily traffic. I can do ...
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0answers
115 views

How to make input data matrix in flowmapper

I have problem with using flowmapper. I'm confused, how do I enter a text record? Can you give me an example of an appropriate text file? I've been doing interpolation and made a contour of the ground ...
3
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1answer
1k views

Creating migration flow map using MapInfo?

my first post on this forum :) Being a beginner in Mapinfo, I didn't find any tutorial on creating a thematic map of migration flows, something like; or I tried Arrow40 extension but couldn't get ...
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1answer
203 views

Error in creating a flow map

I'm trying to create a flow map using FlowMapGenerator. My map is trying to visually show the movement of professional soccer referees to various venues throughout the season. I plan to have several ...
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6answers
1k views

What are good colour schemes for large density flow maps?

I came across nice QGIS tutorial for mapping flows. In contrast to Alasdair, I have zero talent in colour choice. Can anybody recommend some good starting points for nice colour schemes (I'd be ...
0
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1answer
228 views

Flow mapper not working?

I am trying to run the test files for flow mapper plugin in QGIS but I run into an error message.
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2answers
717 views

Curved Arrows showing trade ARCGIS 10.2 [duplicate]

I have 10 points that represent the centres of countries. I want to show with arrows the flow (some kind of trade) from one country to another. The way that my table of attributes is constructed is ...
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1answer
1k views

Creating distributive flow line map showing movement of passengers from bus terminal to several destinations? [duplicate]

I'm writing my final year B.Sc thesis on transportation (pattern of passenger flow from a bus terminal to several destinations). I intend to use a distributive flow line method of spatial movement ...
2
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1answer
1k views

how to create a map with oneway flows using FlowMapper for QGIS

my plan is to create a map that shows the top 50 (by amount of passengers) international flights departing the United States (e.g. New York -> London, Honolulu -> Tokyo...). I want to use the plugin ...
0
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1answer
518 views

Flow mapper plugin failed

I want to create a desire line with the Flow Mapper plugin using QGIS version 2.1. After I did, it has failed. The data that I used is pictured below. There may be an error procedure I have used. Can ...
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1answer
1k views

Flow Mapping Lines by Magnitude

I am attempting to map the flow of remittances into Japan using the FlowMapper plugin in QGIS. When I use the Style--> Advanced--> Size Scale field--> magnitude command, the lines become so thick and ...
0
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1answer
1k views

Does software exist to create Flow Maps (for migration of people) on Mac?

Does anybody know a good, and easy to use, software to create flow maps? I want to create flow maps for showing the flow of people between places (migration). The software has to be compatible ...
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2answers
2k views

How to create arrows lines automatically on ArcGIS, for a thematic map of directed flux?

I need to create a map with the Import and Export Flux between countries. I have the needed data in my table. But I wish to know if there is any tool or extension which will allow me to create those ...
13
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1answer
5k views

How to create desire lines in QGIS?

How can I show the flow coming from an Origin-Destination matrix as desire lines? I need a result like the one in the picture below. I need to scale them proportionally to its value (coming from a ...
4
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1answer
2k views

How to make the thickness of traffic volume flow symbology proportional to traffic counts?

I can scale the bandwidth proportionally to the traffic volumes; however, I cannot show the directionality of the movements. Volumes for directional moves are stored in two different columns of a ...
2
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2answers
619 views

Flow map from aggregate data with QGIS?

I want to create a flow map in QGIS. I have a list of cities and I have to show how many people travel from one city to another. For example, 5 people traveled from Vantaa to Helsinki, 10 people ...
2
votes
1answer
1k views

Flow mapping visualization using a road layer [closed]

I am trying to illustrate travel using a flow map on a road layer. My data is: city of origin destination number of travelers I would like to use a polygon city layer (or point) and a road layer, ...
10
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1answer
3k views

Making radial flow map showing curved lines over short distances (20km) using ArcGIS for Desktop?

Esri have provided instructions on how to make a radial flow map but I think the curved lines will only be produced over a long distance, like half the globe. For short distances (20km) a geodetic ...
2
votes
1answer
252 views

Display freight volume by city on a geographic map

I have been requested to show on a geographic map the volume (in meters cubed m3) of freight (parts) that ship to various cities (Canada/USA). The idea is to show which cities receive the most freight ...
10
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4answers
5k views

Creating arcs between two points in ArcPy?

I've been working on an python script automating the visualization of live point data. I have a table with two coordinate pairs. I'd like to connect these two point with an arc of a circle or similar (...
18
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0answers
8k views

Creating trade flow maps in ArcGIS for Desktop (or any free software)? [duplicate]

I am trying to represent trade flows on a world map where the size and direction of arrows indicate the exports/imports of a given country. This type of map is commonly found in magazines and ...
40
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12answers
8k views

Representing network flows? [closed]

For a project I'm working on, I need to represent network flows over 1,000 zones with directionality. Any suggestions on displaying the information in a nice and non overwhelming way? Any examples ...