About Tableau
Tableau is a good visualization software, the interface is easy to manipulate data, process visualization is simple, to get people more thorough understanding of the data.
day01 learning content
Draw a bar graph and a histogram .
Bar chart
use
Used for comparison between the data. The horizontal axis is the category, and the vertical axis is the frequency of appearance. , Horizontal and vertical bar charts. If bad data name display, consider a transverse bar.
Rendering
The region (category) to drag the columns, drag the data to the line.
Vertical and horizontal adjustment.
Stacked Column .
Color : The classification drag this data can show different colors classification. This drag and drop numeric data, may be different colors showing the situation data.
Right after selection, may be changed by measuring the counting, there is a total, average, median and the like.
Histogram
use
Intuitive show the distribution of data. The horizontal axis is the interval, and the vertical axis is the distribution.
Rendering
1. Create a data bucket. Click in the data bucket created.
The size of the data bucket is range. Follow the principle of closing left and right open.
The data bucket drag to the column, the amount of data drag to the line.
day02 learning content
Line graph, pie chart, and an annular FIG.
line chart
use
Show changes in data over time.
Change the data type
Before use, the time data is adjusted to the type of date. Here adjustment data types.
Simple data split processing
After the right, select the custom split.
Rendering
Measurement data into a format.
Select a data point, the right to add comments , mark .
You can then be edited to change the labeling process .
Adjust the display data . Right, format.
The end result:
together contrast .
You may choose to draw biaxially FIG . Left-click on the data row, select the biaxial drawing.
FIG annular pie and
Pie chart .
use
Data show the internal structure.
Rendering
First draw bar, and then select only mode, click on the pie chart.
Show the percentage . Select the data, rapid table calculation, the total percentage.
Right gray area. Instructions . Graphics can be described.
Donut
use
With the pie, but may be added in an amount of data in the middle.
Rendering
First draw a pie chart.
Drag two the number of records to the line. Select the minimum. Then select the biaxial.
Wherein selecting a pie chart, the size, the pattern widening.
Select another pie, remove color, and to white. And then dragged into the totals.
