Graph App

 It is  a simple android application.The simple name of app is   GRAPH.

The Graph app is based on java programming language and android stdio environment.Android stdio provides amazing data visualization library.We use android library for creating interactive charts in android apps. My app can also easily visualize data and information.

The primary purpose of graph is to show relationship among data or variables.A graph has very effectively reveals the pattern of sales and buys,and is also be used to compare the values for several manufacturers.

-> In this app:

• use library :      [implement 'com.github.PhilJay:MPAndroidChart:v3.1.0']

• the common types of graphs likes bar chart, pie chart, radar chart, line chart ,scatter chart , equation of two line chart and etc.

• use splash screen, navigation drawer, fragment ,alert dialog and etc.

**Watch a sample video:

->Show sample:

    1. Splash Screen 

        It is info screen and go into main app for few second.

  
       2. Navigation Drawer

          It is a UI panal that shows app's menu.
  

            

 3. Bar Chart , Pie Chart  and Radar Chart
                           

 A bar chart is a chart or graph that presents data or information with rectangular bars with length proportional to the values or data that they represent .The bars can be plotted vertically or horizontally.A vertical bar chart is sometimes called a column chart .A horizontal bar chart is also called a row chart.

 

A  pie charts are used in data handling and  are circular charts divided into segment which each represent a value.Pie charts are divided into sections or slices to represent values of different sizes.

 


A radar chart is a graphical method of multivariate data in the form of a 2D chart of three or more quantitative variables represents on axes starting from the same point.
Radar chart is also known as spider chart,polar chart,web chart ,or star plots.

     

  4. Line Chart and Scatter Chart

    

                  

                   Line chart

A line chart is a chart is used to represent data or information between X and Y axis.It connects a series of data points with continuous line.It is simplest and easy to understand.

It is major use in finance department.  

    

    scatter chart

A scatter chart is points plot type graph.It is simple, visible and easy  to understand.It is uses dots to represent values for two different numeric variables.The position of each dot on the X-axis and Y-axis indicates values for an individual data point.









5.Graphical view of two straight lines:

     
A straight line is just a line  with no curves.Therefore ,a line extends both sides tills infinity.
The general equation of straight line is :

                          {   aX+bY=c or aX+bY-c=0  }

 Relation between two lines:

          1) For parallel lines:

                           

a1X+b1Y+c=0  and a2X+b2Y+c=0

         [ a1/a2 =b1/b2 ]

So,There  is no any solution.

   
         

          
       2)For Intersection lines:

  
a1X+b1Y+c=0  and a2X+b2Y+c=0

    

                   [a1/a2 =/= b1/b2] 

       




                                                                                                     

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