Does HighStock has tree kind of charts available in free or license version?
We are using HighStock library to draw timeline charts, however could not find any examples of tree/graph type of visualization.
Something similar to 'yFiles for HTML'?
tree graph is not available, but you can vote for this suggestion in our uservoice http://highcharts.uservoice.com/forums/55896-general?query=tree Obviously you can try to use scatter chart with customised markers.
http://www.highcharts.com/demo/scatter
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What is the best way to visualize neo4j data in a chart? I am looking for something simple just bar, line a pie charts. Not necessarily using the api but that would be ok too. Thank you
Try https://github.com/jexp/spoon-neo4j library. It augments Neo4j browser to allow to draw pie, line charts etc...
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!)
I'm new in iOS development and want to create an app with some charts. I decided to start development with swift because it seemed to be more easy to learn for me as Java developer. But meanwhile I think using objective-c would have been the better choice because AFAIK there is no chart library available that match my criteria:
usable with swift
has line and bar charts
ability to draw charts with date and time axis
free to use or low price < 100 USD
Common chart libraries like JBChartView, Core-Plot and iOSPlot do not fulfill my criteria so I'm thinking about either to use a JavaScript chart library in a WebView or switching completely to objective-c
Is it good practice to use a JavaScript chart API in a WebView? If so, may this make problems on different devices with different screen
sizes and orientations? What are common pitfalls with this approach?
Edit:
Core-Plot release-2.0 works well with Swift
You could use iOS-Charts
This is a great chart library written in swift and is on github:
There are some great tutorials going through the basics here.
iOS-Charts seems to fit your criteria
It is completely free
It is written specifically for Swift
It has 8 different graph types
You can use this powerful ios charts library https://github.com/danielgindi/Charts
or you can use this SVG library to create your own https://github.com/exyte/Macaw
If you are looking for commercial library (I haven't used this yet) https://www.shinobicontrols.com
This is a great telegram channel, where you can find different useful information about ios development and libraries https://t.me/iostalks
As noted in the comments on the linked Core Plot issue, you can use Core Plot in Swift as long as you use the code from the release-2.0 branch. The changes on that branch resolve the issues with NSDecimal that 1.x versions of Core Plot have.
I am using evaluation version of TeeChart VCL v2012 in Embarcadero C++Builder XE. In my program I get about one thousand of points every second and put them into FastLineSeries. To put points into seraies I use AddXY method. When I run my application, it tooks about 20% of processor time on 3 series. I was wonder if you could give me some advice how to improve performance of adding and drawing series?
I'd suggest you to try to implement as many tips as possible from those explained in the Real-Time Charting article here. Resuming:
Disable/hide some chart elements
Populate series with data. Use arrays and remove unneeded points. See an example in the features demo at "All features\Welcome !\Speed\Fast Dynamic Arrays"
Other tips:
If you are adding many points at a time, try setting AutoRepaint=false before the addition, and back to AutoRepaint=true after it.
Use the TFastLineSeries's DrawAllPoints property. See an example in the features demo at "All features\Welcome !\Speed\Fast Line Speed DrawAll".
Use the TDownSampling function. See an example in the features demo at "All features\Welcome !\Functions\Extended\Reducing number of points".
And also look at the other examples in the features demo under "All features\Welcome !\Speed".
NOTE: The features demo is an application shipped with the installation that shows the majority of features supported by the component.
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.