I'm trying to learn myself with data visualization and when I'm going through the bar chart I'm stuck with the following thing.
In the graph there is a vertical black line on each bar in the bar char. What exactly signifies that overlay-ed black line. Thanks for your help
This looks like vertical error bars.
Error bars are a graphical representation of the variability of data
and are used on graphs to indicate the error, or uncertainty in a
reported measurement.
I had the same questions and did some researy with a summary below. Please share your thoughts if any misunderstanding.
The error bars shows the confidence interval Or Standard Deviation.
CI- a range of values that you can be x% certain contains the true mean of the population.
useful link
SD- require to be defined in the code.
i.e.ax = sns.barplot(x="day", y="tip", data=tips, ci="sd")
useful link
Related
I have a bar graph in Grafana (with InfluxDb). Its grouped by time and a tag. But I noticed that the large values are being drawn over the lower values.
Example below. You can see the points where the lower value bars are. I would expect that the lower values are drawn on top. Is this a setting?
Query:
Looking at your data it appears to be showing the time spent in each component of a request pipeline, so my suggestion would be to present them as stacked bars, which will better represent how each contributes to the total time spent.
You can enable stacked mode on the Display tab of the graph edit panel.
If you're more interested in seeing how each item compares to the others, then maybe a line or point plot would be easier to read, especially as superimposed bars will be be assumed to be stacked by most viewers.
I am trying to show the total at the top of the stacked bar graph. But it is showing very far from the top of bar graph. sorry this might be duplicate question. . Could anyone help me with adding indicator like one in the picture and showing the value at the top of the triangle? TIA
I am able to solve my problem. I added second series that is total of other 2 series and change the chart series type line with markers,gave the color 'No color',hide the legend property and set the label position as top.But I do not know why the value shows below for the first column. this same technique I tried before I am posting my question.But it did not work at that time.Now it works except one value shows below the marker.
Reference:http://sqljason.com/2010/06/display-total-on-top-of-stacked-chart_8589.html
This question is related to enter link description here.
I have this histogram but as you see it is very difficult to compare the bares. Is there any method to better represent the information for better comparison by eyes?Thanks.
Perhaps you want logarithmic Y/X-axis. this is possible by using a workaround, that is explained here:
Why does my histogram become incorrect when I change the y-axis scaling to 'log'?
You cannot just use the 'Yscale','log' , because:
the bars are incorrectly displayed; the histogram bars either become lines or disappear entirely.
Please consider following graph :
The above bar graph is built using jfreechart. I have two questions:
1) Values (1,5,4 etc.)are printed on the top but within the bars.How to display these on the top but above the bars?
2)Each value is printed on the bars in horizontal manner. How to display them in proper vertical manner?
Thanks...
You should take a look at ItemLabelPosition, as explained here.
It is a property on the BarRenderer for the given chart. Try experimenting with the different values for the desired result.
Expanding on #Jes's helpful suggestion, you can see how ChartFactory.createBarChart() uses ItemLabelPosition in the relevant source code. More on the label generator parameters may be found here.
I have a stacked bar graph to include in my paper, which is going to be printed by reviewers in black and white only. When I print it out, I cannot tell the difference between some parts of it, which would otherwise be clearly distinguishable in color. Is there any way to make it readable even in black and white? Thanks in advance.
Have a look at the function presented in this File Exchange Pick of the Week to create hatched patterns instead of (or in addition to) your colors.
Here's one example:
Here's one example of how to use applyhatch_pluscolor:
figure, bar(rand(3,4)
[im_hatch,colorlist] = applyhatch_pluscolor(1,'|-.x',1,[1 0 1 1]);