I am working in visualization dashboard, I am facing few problems
I am quite confused with what to choose among d3js and canvasjs. Though d3js has rich functionality in terms of good visuals I prefer canvas because its easy to create charts, if you still have any ideas for me to proceed further in choose among these(d3js & canvasjs) please help it.
Purpose :
I want to create a interactive dashboard with lot of cross filters over the visuals any suggestion ?
The mode of data call from API; should I get the data completely from the server and work on the data in the java script or should I get data for each and every chart separately.
If I get the whole joined data from database the data size is too huge (more than 2 MB) for a dashboard and if i get a precise data for the specific chart its less. An example might help for better understanding.
Consider I have data for sales view which contains multiple columns joined from different table and my dashboard has 4 charts
chart 1: Bar chart for sales by item group
chart 2: Pie chart for sales by sales person
chart 3: Line Graph showing the sales by hours (week days): trend of the sales at the shop
chart 4: Total Sales, Total Orders KPI
Data Collection : I can get data for each and every charts separately by REST API which will only contain data for that chart (or) I can get the data as a whole from the JOIN of the tables which will be huge (MORE than 2 MB, it grows as the sales grows).
Interactivity : As i click on the chart 1 (bar chart's) any item group the rest of the charts should get filtered according to the selected item group: (writing a filter js code will help, am curious about the preferred way)
Which method i should prefer for data obtaining and cross filtering.
Answering the above question will invoke more doubts
Thanks
CanvasJs is more of creating charts using canvas element of HTML5 and D3 uses svg. Which gives advantage to canvasJs over D3 as CanvasJs have quick response time, thus rendering is fast in CanvasJs. If you want quick response time and not much calculation/filters on data then you can go with CanvasJs.
D3 is more of filtering charts based on filters, which can be used in your case. And though you'll be dealing with sales data. You will be needing filters, so that once you apply filter to one chart the changes related to that filter should reflect to other charts. D3 uses crossfilters and has ability to filter out all the related information and render the other charts accordingly.
Canvas and D3 both support Arrays, Json and CSV formats.
Related
i want to make graphs/ charts from my data, that is stored on Thingspeak (its a weather station project using arduino). Now, i want to be able to plot these data into graphs. Thingspeak itself does that, but the graph is non customizable.
What i want do do is to have some buttons and comboboxes to select for example certain time interval (days,weeks,months), be able to point on line in graph and it tels the stats for the one spot etc.
Is there any templates or web services that do that? Or tutorials on how to do that? I want to have these charts embedde to my webpages. Thank you for replies.
I suggest you look at Chart JS or D3, both good charting libraries.
I'm using amCharts to display graphs and I need to display 2 graphs from different data providers it the same Stock Chart panel.
In amCharts tutorials, they displayed the graphs from the same data provider (one dataset), so when I tried adding another dataset, it didn't work! It only displayed the first graph.
Could anyone give me a tip or something?
JavaScript Stock Chart will display a copy of a graph for each selected or compared data set.
So if you need to display a graph for several data sets, make sure the following two conditions are met:
compared is set to true for the second data set.
comparable to true for the graph.
compareField is set for the graph.
Here's a working example:
http://codepen.io/team/amcharts/pen/1706af51ff69cf22b2d448cfb604b55b
I am trying to create a radar chart dynamically based on the number of records coming from the server as json data.
For example: my json has 1000 records and I try to create radar chart to show the data but my html page getting hanged.
I tried it and it is working up to 50 charts.
This can't be fixed.
Every single chart you render requires a significant portion of processing time to be built. The more charts you want to render, the more processing time it will take. There's nothing you can do about that.
Either try to condense your data into (significantly) fewer charts, or render an individual chart when a row is selected.
Or, (tell your clients to) get a beast of a machine.
I have 3 levels categories in which many items are divided.
Like in level 1 i have a pie chart.. if i click on any slice of that chart it should go to level 2 of that particular slice category and then again to the third level.
Everything should happen on same pie chart.
eg.. I have a pie chart which shows number of animals in 2 categories.. i.e. mammals and birds. If i click on mammals it should change pie chart to show number of mammals in herbivorous and carnivorous category.
I my real scenario i made a data set which has all the data through a query.
Then i made a data cube having 3 dimensions and a measuring count.
I displayed the 1st level on pie chart but i am unable to move to next level. New to BIRT i am.
And I don't need to jump from one report to other using hyperlinks to other report.. Everything is happening in same report.
I am using:
Actuate BIRT Designer Professional
Version: 4.4.0
This can be achieved by using a drill-through hyperlink. A drill-through does not necessarily jump to another report: it is definitely possible to drill to the same report, and set a report parameter controlling the dimension level.
A straight solution is to design three charts (one per level) based on the same datacube, and make use of a report parameter to keep only the chart of the current level. This allows to optimize chart views for each level: change the title, legends, chart type, font size etc.
There are a couple of ways to disable / enable a chart from a report parameter, the most efficient is to drop it by script in beforeFactory such below. Visit this topic
var design=reportContext.getDesignHandle();
if (params["level"].value!="1"){
design.findElement("chartLevel1").drop();
}
if (params["level"].value!="2"){
design.findElement("chartLevel2").drop();
}
if (params["level"].value!="3"){
design.findElement("chartLevel3").drop();
}
I'm currently working on building a charting web application, and I've chosen dygraphs for my time series data (Two weeks of data at an hourly level, if anyone finds this information relevant). On the same page, I also have a couple of customized d3.js charts that pull metrics from the same database as the trendline.
I want to know if I will be able to link the selection on my dygraph line (Supposing I zoom in on 3 hours worth of data, i.e., 3 rows) - to my d3 charts, so that the data in the d3 charts also get filtered down to the date range chosen by zooming in?
I'm quite the amateur here, and apologize if my question seems vague, but any sense of direction would be helpful.
I'm guessing I should be able to do this by modifying some class in the dygraphs source code, or reference the same from my d3 chart.
Thanks.
You shouldn't have any trouble doing this. There's no need to modify the dygraphs source. You can implement handlers on the dygraph object (zoomHandler or drawCallback, most likely) which update the D3 chart.
See this demo for an example of synchronization between multiple dygraphs.