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How to use LineChart to show lines with dots having 2 datasets avoiding null values from them and showing appropriate colored dots in react native

I have to show 2 datasets in a LineChart. I have done that to show dots and datasets on LineChart. But, the issue is it is showing dots for null values also which I do not want. Also, I want to show the color of dots which I have given in dataset. I used getDotProps function to get the index of the dataset and to avoid null values. But, it is not working properly when I'm having common values in both the datasets. Please help with failproof procedure along with code to achieve this.
Here is the snack link for the same which is not working properly.

Show hint data inside bar in DevExpress chart controls

I have an ASP.NET web forms application which uses DevExpress's bar chart controls. In the below side-by-side bar chart:
I needed to show some extra information apart from traditional x and y argument-values using series point's {HINT} pattern (Hospital Admissions: 130, (65%)) - as per the image.
Now, I need to show it in the bar itself. Like the control shows by-default for Stacked bar charts:
How do I push the Tool tip hint data to be shown inside the data bars?
Any suggestions, kind folks?

It is possible to access the current data row directly when handling the CustomDrawSeriesPoint event. Cast the e.SeriesPoint.
Tag property to the corresponding type (e.g., DataRowView). This should make it possible to update the SeriesPoint label text.
You can find a small sample project that illustrates this approach in the Chart Series Label from a dataset column that is not part of the series ticket.

Alter first vertical grid line in nvd3

I want to remove (or make effectively hidden) the first vertical line in the grid for an nvd3 chart. I thought it was a problem with my chart, but after testing it, I realized it seems to be a more general problem.
I tested it by running the line:
d3.selectAll('.tick, .nv-axislabel, .nv-axis text').attr('fill','#999999')
in the console, at the simplest line chart I could find: http://nvd3.org/examples/line.html and it still didn't work! It changes all the lines except the very first vertical line. I'm baffled, I've tried every combination of classes with stroke, fill, opacity, etc - I can either affect the entire svg (with opacity), or nothing. Anyone have any ideas?
EDIT:
I should have specified this originally, I apologize - I do not want to remove the Y axis entirely. I still need the label and the tick marks - I just want to remove that one vertical line (or at least lighten it - it is much darker than the rest of my chart).

Going by your comments:
You don't want to see the " the first vertical line in the grid for an nvd3 chart"
Which is the y axis:
Two ways to achieve that:
Option1
var chart = nv.models.lineChart()
.margin({left: 100}) //Adjust chart margins to give the x-axis some breathing room.
.useInteractiveGuideline(true) //We want nice looking tooltips and a guideline!
.transitionDuration(350) //how fast do you want the lines to transition?
.showLegend(true) //Show the legend, allowing users to turn on/off line series.
.showYAxis(false) //hide the y-axis
.showXAxis(true); //Show the x-axis
Option2:
Since in your example you are going for a CSS option
d3.selectAll('.nv-y').attr('display','none')
I will prefer Option1
EDIT post your clarification, you wish to make the y axis line light you can use:
d3.selectAll('.nv-y path').attr('opacity','0.1')
or if you want to hide it completely
d3.selectAll('.nv-y path').attr('display','none')

One solution is to specify an array of tick values that you want to use for each axis. Use axis.tickValues([values]) to explicitly declare which XAxis ticks you want for your graph. So you could pop .tickValues([1, 2, 3, 5, 8, 13, 21]); into either the chart.xAxis or the chart.yAxis, and ticks would only appear from the corresponding values in the array. In your case, you would want to put it in the chart.xAxis variable. However if you want to have a dynamic chart, explicitly declaring the tick values would pose a problem once the data is updated in the graph. If on the other hand you are using static data, this is a pretty easy fix. I've tested this solution in their live code editor and it seems to do the trick.
Refer to https://github.com/mbostock/d3/wiki/SVG-Axes#ticks to see some other directives that could be of use.

Rendering issue with 2 Google charts on the same page

I have a rendering problem when I have two column material Google charts on the same page. Basically, the first column gets partially drawn on the vertical line which corresponds to axis of the second chart. If I have only 1 chart - everything is OK.
Please take a look at the following screenshots to see the problem:
2 charts (problem): https://www.dropbox.com/s/9p0ji49kpv2vtl1/gc-svg-pb.png?dl=0
1 chart (no problems): https://www.dropbox.com/s/12rpxl23ojean2b/gc-svg-1.png?dl=0

It seems to be a problem with the different scales on the Y-axis. If you look at this example the problem is gone, because the widths of the Y-axis labels of both charts are equal: fiddle1
If you force the Y-axis label to a fixed width, using the vAxis.format option for example, the chart is also correctly rendered: fiddle2
You could try to define a usable format string (refer to the Google documentation for more information), but it seems like a bug in the Google API, see phts's answer for the support page.

You'd better to find/tell about your problem on Google Charts project page directly - https://code.google.com/p/google-visualization-api-issues/issues/list.

Here is the thing, the two tables are in the same line and their Y-axis unit confuses the charts styling. I mean;
There are two-digit numbers in the first case [25,34,33,45,...,26] and five-digit numbers in the second case [31209,43658,42007,...30177] These five-digit numbers become strings like 20K,40K...
Thus, problem is in that part. One solution can be formatting the numbers as #mhu suggested. Another solution can be using the ColumnChart type by changing the code part;
var chart = new google.visualization.ColumnChart(document.getElementById('traffic-chart'));
chart.draw(data, google.charts.Bar.convertOptions(options));
and adding this to the options ;
hAxis: {viewWindowMode: 'maximize'}
https://jsfiddle.net/L0gxnywu/
Solution 2: You can change the div's sequence as;
<div id="requests-chart"></div>
<div id="traffic-chart"></div>
https://jsfiddle.net/3j4s1vfj/

Google Charts API: Highlighting closest Datapoints between 2 series. How?

I have a Google line chart that contains a few years of data. Each year is a separate series. The chart legends displaying each year/series are clickable and clicking on any given 2 or more of these legends/series, displays them and their corresponding Datapoints and their annotations. In the hAxis, these Datapoints are integers ranging from 1 to aprox. 6,000,000. I also have their values displayed under annotations for each Datapoint.
Notice that when you click on a datapoint, it increases in size and gains a white border. If you unclick it, it returns to it's original form.
My question is:
Is it possible to change my code to look for the top 10 closest-to-each-other integers between 2 series based on a predefined threshhold? I know styling may not be an option but perhaps there may be a way to force a Datapoint to appear clicked.
Please allow me to illustrate it for better understanding.

You can do that using option selectionMode: 'multiple' and selecting appropriate points using setSelection() method. For example:
chart.setSelection([
{row:0, column:1},
{row:0, column:2},
{row:2, column:1},
{row:2, column:2}
]);
Of course, you will have to find out points which correspond to defined threshold. See example at jsbin.
Update: example with DataView.