Question

Create a custom control that draws a graph of your choice.

Directions

Start by selecting a type of graph you would like to draw. Some options are listed below along with their functional requirements. If there is a different type of chart you would like to work on, check with your instructor for assignment scope.
Submit an application that includes your custom graph, as well as some means of entering data to be displayed in the graph.

Pie Chart
Draw a pie chart given a list of numbers. Numbers do not have be percentages of the pie. For example, if the user entered 10, 20, and 10, the chart would have 3 slices that covered 25%, 50%, and 25% of the pie. Each slice should have a different color, shading, or some easy way of identifying it.

Bonus: Display a legend on the pie chart with each section labelled.

Bar Chart
Draw a bar chart given a list of numbers. The chart should be scaled appropriately for the numbers entered by the user, and a y-axis should be draw to show the scale. The user may enter negative numbers. Each bar should have a different color, shading, or some easy way of identifying it.

Bonus: Draw an x-axis, with each bar labelled beneath (or above for negative numbers).

Line Chart
Draw a line chart that can display multiple lines. The chart should be scaled appropriately for the numbers entered by theuser, and a y-axis should be drawn to show the scale. Each line is given by a sequence of numbers, and should be draw with a different color, shading, or other easy way of identifying it.

Bonus: Display a legend identifying each line with a label.

Answer 1

For this project, I'll be creating a Bar Chart control that dynamically scales based on user input. It will depict a series of bars corresponding to the numbers provided by the user, allowing for negative values as well. Each bar will be visually distinct, using varying colors or shading for easy identification.

Step-by-step explanation:

A Bar Chart is an effective visual representation for comparing categorical data. To create this custom control, I'll use a programming language that supports graphical interface development, enabling me to generate bars according to user-entered numerical values. Scaling the y-axis appropriately will involve calculating the range of values entered, allowing the bars to adjust proportionally. For instance, if a user inputs values from -50 to 100, the y-axis will need to scale to cover this range.

Each bar in the chart will represent a single value from the user input. To make them visually distinct, different colors or shades will be applied to each bar. Additionally, labeling each bar on the x-axis will enhance the chart's readability, enabling easy identification of each value's position. This involves associating each numerical entry with its corresponding labeled position on the x-axis.

Creating a responsive and visually informative Bar Chart control involves meticulous programming to handle various user inputs, scaling the axes accordingly, assigning distinct visual elements to each bar, and ensuring clear labeling on both axes for effective interpretation of the displayed data. This implementation aims to offer an intuitive and user-friendly graphical representation of the provided numerical data.