Ways to freeze/Pause Shield UI Chart showing forex data flow? - javascript

I am using Shield UI JavaScript Charts to visualize forex data. The charts are being constantly populated with data which is displayed over even intervals of time. However I need to be able to turn off/freeze some of them. The charts themselves have no such functionality, so am looking for some ideas/solutions I can use.

There are two possible scenarios I can think of.
The first one is just to pause the data visualization so that once resumed, the chart having been hidden will have the same points as the others.In order to do so, you may use a checkbox and recreate the chart only if the checkbox is checked/unchecked.
The second scenario involves skipping those data values that have been displayed on the other charts. In order to do so you only need to place the data binding inside the checkbox checked/unchecked clause.Once resumed, the chart having been paused will contain less points compared to the other non-paused charts on your page.

Related

Best way of manipulating data in d3/Canvas JS?

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.

Displaying different graphs in the same stock panel (amCharts)

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

Draw multiple DataTables in Google Charts LineChart

I am using LineChart from the Google Charts API and I want to plot two sets of data - one is observations and one is model outputs. The problem is that the model outputs are regular in time (hourly), but the observations can be sporadic and are not usually aligned with the model times.
I can't store them both as columns in one DataTable, as they are not temporally collocated, so I need 2 data tables, but I can't get LineChart to accept more than one data table!
Is there a way around this?
TIA.
The best way to do this would be to combine the DataFrames and leaves NULLs where the values are not defined. In your case, each row would end up having one defined value one null value.
Then when you plot, set interpolateNulls to True and it will connect the points through the NULLs which should give you the functionality you want.
First, you do have to get your data into one DataTable. There is no way to create a chart from more than one DataTable or DataView, or create a DataView from more than one DataTable (though there has been a request for this). How you get the data into one DataTable is up to you. It doesn't look like any of the data manipulation methods will help.
The good news is, once you have all the data in one DataTable, you can plot it even if the data sets are not aligned at the same time values. Just specify multiple domain columns using data roles. Search for "multi-domain" on that page to find an example.

Editable javascript chart - interactively resize bars or pie sections

I need a library or a framework plugin that can draw charts that can be modified real-time by resizing part of the chart itself. Is there such thing?
I plan to use it for adjusting the chart values. Mostly for controlling amount allocation.
For example. You have 4 hours and you have 5 distinct types of tasks. I want the user to be able to allocate time for each task and see visually what's the impact on the available time.
I think Visually Editable Charts of Fusion Charts is what you are looking for.
We use various charts from http://code.google.com/apis/chart/ for our web app, and it works great.
The chart are loaded once, and refreshed, each time the user change a value, with new data through their Javascript API in real-time.
gRaphael should be the most popular:
http://g.raphaeljs.com/
I can recommend HighCharts:
http://www.highcharts.com/
Found a few options: http://jamesalvarez.co.uk/uncategorized/draggable-piechart-js-class and http://www.shodor.org/interactivate/activities/PieChart/.
The first one looks the most promising.

How to visualise yes/no data

I don't know where this question goes, if it belongs in math, then someone should move it there.
I have a set of yes/no data (0s and 1s), what possible ways could you visualise this, apart from the normal pie charts and the like.
I want to do this in Javascript (edit: jquery would be easier), using AJAX with PHP.
Radiobuttons or Checkboxes are usually used on webpages to display Yes/No choices. Another option would be to use images like a green check mark to display a positive value and a red cross to display a negative value.
There are many ways to display data. Are you looking to show it as a graph? If so, try google charts API.
Just the binary choice with no other criteria? (time, location, etc.)
A two element bar chart, two shapes (circles?) in different sizes and colors (like a disjoint Venn diagram), or a pie chart immediately comes to mind.

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