I need to add the measurement tool for my GIS Portal.Is anyone know how to measure distance and area in Openlayers3 with GeoExt3 and ExtJs6?
Thanks in Advance.
There is an example that shows how to implement a measure tool in OpenLayers 3, see:
http://openlayers.org/en/latest/examples/measure.html
How such a tool is implemented greatly depends on the application itself and the other libraries available around it. For example, you're using GeoExt3 and ExtJS6. You could create the tool as a GeoExt3 component and contribute it with Pull Request. See: https://geoext.github.io/geoext3/ (Now: Get Involved!)
Related
Is it possible to calculate Isochrones using Apple Mapkit? I'm not yet familiar with this API, thus I'd like to know in advance whether it's worth learning it.
Actually, I'd like to get all nodes on surrounding streets, in a given distance from a predefined point.
Thanks.
MapKit supports polygon drawing on the map. There is no isochrone function per say, it has to be built by you.
Check this out for details.
I know the post is a bit old but I want to suggest you the isochrone solution I've just developed: https://github.com/punkerpunker/isochrone. It might be interesting for you, works out of the box and solves task you've mentioned.
I'm drawing a map of the US with D3. Problem is the design on the project has changed and I need to draw regions as a whole instead of the individual states. I can't for the life of me find any good info on how to combine state features into a single region feature.
I'm assuming the gdal is the right tool for the job, but I can't seem to find how to do this.
The tutorial Mike T posted is a great resource, but it didn't solve the specific problem I had.
What I finally discovered is that when you're using topojson there is a topojson.merge method to combine multiple paths into a single path.
Follow this tutorial to convert a Shapefile into GeoJSON, then to TopoJSON, then to a D3 project. There is even an example of US (counties?) included with the project.
Good day,
I was wondering, is it possible to create "indoor" maps with Mapbox for iOS (or does anyone have another suggestion)? I have a PDF of an indoor floor plan. I think I need to convert that to the MBTiles ( http://mapbox.com/developers/mbtiles/ ) format. How could I acchieve this?
Allso, when drawning the "walking route" for the person to certain facilities in the building. "it" should know where the person could walk.
Currently I am trying to create something with CATiledLayers (but I am kinda stuck (I can display the map, using "a tile" format.) and was looking and MapBox might be usefull since it has things like 'drawning' vectors on the map, or icons with information and such. For the walking directions I was thinkin about 'dotting' the walking routes so "Dijkstra's" algorithm" could determine the path. How could I go about this in Mabbox, even if possible?
Any help in the right directions would be greatly appreciated.
Kind regards,
Matthijn Dijkstra
You can likely do this with MapBox. In order to get an image or PDF into MBTiles format, you will want to use TileMill. You basically need to get your imagery into a geographic format. The easiest way would be to export the PDF as a TIFF, then make it a GeoTIFF and follow these instructions. That will let you geo-enable the imagery, get it into TileMill, then export it as MBTiles. Then, you could use the MapBox iOS SDK to bring it to iOS.
You could use a service such as indoor.io to generate the maps. There are a bunch of indoor services out there and more coming on the market.
I need to create a graph as shown in the image below. I have the values for the upper limit, lower limit and the average for each question. Can anyone suggest a plugin in Ruby on Rails to create such a graph shown in the image?
Edit:
I am finding it difficult to find something which does clear the area from the X-axis(Question axis) to the lower limit. Can anyone help me with this?
Google has a URL based chart API that and it looks like some of the chart types available will match what you are looking for:
Chart Gallery:
http://code.google.com/apis/chart/docs/gallery/chart_gall.html
Getting Started Guide:
http://code.google.com/apis/chart/docs/making_charts.html
Do you mind if the output is in flash?
PullMonkey is a pretty nice plugin if it's not a problem to you http://pullmonkey.com/projects/open_flash_chart
I am looking for a rails flash graph/chart plugin, for drawing
bar chart,
stacked bar chart,
pie chart,
stacked area chart,
and line graphs
which support the below criteria,
1. Customizable tool tip. For eg: when i am drawing a stacked area graph, i want to display all the y axix values for that x axis point as tool tip.
2. Graph should support on click event
3. The graph should be able to send as an image through inline attachment.
4. Column graph, that should be able to display the value above the bar.
5. Should be able to turn off the animation
6. We can draw two y axis
Any help is highly appreciated.
Thanks in advance.
Nithy"
EDIT: I am willing to purchase a commercial license if its servers the purpose.
I don't know which ones will have all the features that you want but I was playing with charts a while ago and this is a list of some possibilities:
Ziya(http://ziya.liquidrail.com/) - Rails plugin
AmCharts (http://www.amcharts.com/) - The one I ended up using because of flexibility - No rails plugin but it is quite simple to deploy using with rails XML support (I guess it does export images and has all the features you want though it might take a little while to understand and make full use of it)
Fusion Charts (http://www.fusioncharts.com/) - Seems to be a good option if you are willing to inve$t some money on it
Gruff (http://nubyonrails.com/pages/gruff) - Also rails plugin - I don't remember anymore why I decided against it but I think it was because of the lack of animation
OpenFlash (http://openflashchart.com/) - I liked this one though I just used as a proof of concept
I also did try the Timeplot (http://www.simile-widgets.org/timeplot/) that is totally javascript because I had a problem with the amount of points it was required for my charts and the flash-based solutions had several limitations on that. Though I gave it up because of deployment time contraints.
Hope it helps.
Check out Highcharts http://www.highcharts.com/
Cheers,
I also heavily use AmCharts in conjonction with the Ambling Rails plugin.
If you go this way, know that you will pass time in the AmCharts reference documentation for fine-tuning the parameters of your charts. But it's worthwhile considering the results it give.