JPH04266181A - Circle graph display device - Google Patents

Abstract

PURPOSE:To offer the circle graph display device which improves operability by a person who executes an operation, and also, can designate an area of a circle graph even if the display space is small. CONSTITUTION:The center angle of each sector part, and a start point and an end point of plotting are stored in a RAM 12, and a coordinate value detecting part 14 detects a coordinate value of a coordinate instructed by an instructing device. In which sector part in a circle graph the coordinate value detected by the coordinate value detecting part 14 is contained is discriminated in an area discriminating part 15 by using the center angle of each sector part the center angle of the coordinate detected by the coordinate detecting part 14, and in the case the coordinate value is contained in the sector part, the processing corresponding to the sector part is executed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pie chart display device that can be operated by pointing to a sector of a pie chart using a mouse or the like.

0002

BACKGROUND OF THE INVENTION Conventional pie chart display devices have a button area separate from the pie chart for operations when pointing to the fan section of the displayed pie chart using a pointing device such as a mouse. . FIG. 6 is a diagram showing a display image of a conventional pie chart display device.

As shown in the figure, in the conventional device of this type, a button area A6 is provided as an operation area in addition to the pie chart 60.
11. A button area B612 and a button area C613 are provided, and the operator specifies the button area corresponding to the fan-shaped area to be specified using the pointing device. Here, a program is defined in advance that, by specifying a button area, performs processing related to a fan-shaped area corresponding to the button area.

[0004] For example, if the person performing the operation
If the user wishes to perform an operation on item 1, the button area A611 is specified using the instruction device. Button area A6
11 is specified, a processing program related to the fan-shaped area A601 is started, and the operator can execute the process related to the fan-shaped area A601.

[0005]

However, the conventional pie chart display device described above has the following problems.

[0006] ■The displayed pie chart and the button area are displayed in different positions, and the display and operation targets are separate. It is difficult to use because it is necessary to check whether the button areas are compatible.

[0007] Since it is necessary to display the pie chart and the button area, a large space is required on the display device, and if the display space is small, the display of the pie chart becomes small.

The present invention has been made in view of the above-mentioned points, and provides a pie chart that improves the operability of the operator and allows the area of the pie chart to be specified even in a small display space. The purpose is to provide a display device.

[0009]

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a pie chart based on the center coordinates of the pie chart, the diameter or radius of the pie chart, and the coordinate values of each fan section in the pie chart. A pie chart display device for displaying a pie chart, comprising: a storage means for storing the central angle of each sector; a coordinate value detection means for detecting the coordinate values indicated by the indicating device; and a coordinate value detection means for detecting the coordinate values indicated by the coordinate value detection means. , and area determination means for determining whether or not the area is included in each fan portion,
The present invention is characterized in that when the coordinate values specified by the area determination means are included in the fan portion, processing corresponding to the fan portion is executed.

0010

[Operation] The present invention has a pie chart display device configured as described above, and by directly instructing a part of the pie chart with a pointing device, processing corresponding to the fan section in the pie chart including the designated coordinates is performed. Since the display and operation target are the same, it is possible to specify the area of the pie chart even in a small display space, and the person performing the operation can specify the area by looking only at the pie chart. Can be done.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a pie chart display device according to the present invention. In the figure, 10 is a CPU that controls the entire pie chart display device of this embodiment, 11 is an input device such as a mouse and a keyboard, and 12 is a device that stores data for data processing. 13 is a ROM in which programs and the like are stored; 14 is a coordinate value detection unit that detects coordinate values on the pie chart display unit 16; 15 is an area determination unit;
Reference numeral 6 denotes a pie chart display section composed of a bitmap display or the like. Further, the coordinate value detection section 14 and the area discrimination section 15 constitute a button execution section 17 .

FIG. 2 is a diagram showing an example of a pie chart displayed on the pie chart display section 16. Further, FIG. 3 is a diagram showing a memory map of data stored in the RAM 12 of this embodiment. As shown in FIG. 3, the RAM 12 is divided into a circular display data area 301 and a fan-shaped area data area 302. The data used in this embodiment will be explained below with reference to FIGS. 2 and 3.

The circle display data area 301 contains the coordinates C (Cx,
Cy) coordinate values and the value of the radius R of the circle 201 are included.

The fan-shaped area data area 302 includes data for displaying a fan-shaped area and a processing program, and the data for displaying a fan-shaped area includes a drawing start point, a drawing end point, and a drawing end point of the sector. Constructed by the value of the central angle. For example, regarding the display data of fan-shaped area B202 shown in FIG.
Drawing start point S2 (Sx2, Sy2), drawing end point E2 (
Ex2, Ey2), central angle θ2, and fan-shaped area B202
As shown in FIG. 3, the processing program P2 corresponding to S
x2, Sy2321, Ex2, Ey2322, θ232
3 and P2324.

Next, the operation of the button execution section 17 of this embodiment will be explained. Here, FIG. 4 is a flowchart for explaining the processing of the button execution unit 17, and FIG. 5 is a diagram for explaining a state in which coordinates are input into a pie chart.

(1) First, the user of the pie chart display device inputs a desired portion on the pie chart 50 using a pointing device such as a mouse (step ST401).

(2) The coordinate value detection unit 14 performs step ST
In step 401, the position of the input coordinates is detected. For example, Figure 5
When X is input in the pie chart 50 shown in , the coordinate values (Xx, Yy) of X are detected (step ST
402).

(3) Next, the radius R of the circle of the displayed pie chart 50 is compared with the distance r from the input coordinates X to the center point C of the circle. (step ST403).

(4) Find the angle θ between the drawing start line 501 of the pie chart 50 and the input coordinates X (step ST4
04). θ is determined based on equation (1). θ=arccos(Yy/r) (
1)

(5) Since θ obtained in step ST404 has two values when 0≦θ<2π, the X coordinate Cx of the center point C of the circle and the
The magnitude relationship of the coordinates Xx is checked (step ST405).

(6) In step ST405, Cx−Xx<
If it is 0, θ is converted as shown in equation (2) (step ST406). θ=2π−θ (
2)

(7) In order to determine which fan-shaped region includes θ obtained in steps ST404 and ST406, each variable is initialized. Here, M
AX is the total number of fan-shaped areas displayed in the pie chart 50, βs
um is the sum of the central angles of the fan-shaped area (step ST4
07).

(8) Let βsum be the sum of the central angle βi of the i-th fan-shaped area and βsum (step ST408)
. Here, βi is θi333 in the memory map of FIG.
is applicable.

(9) Compare θ and βsum (step ST409). Here, if θ is smaller, as shown in FIG. 5, X is within the i-th fan-shaped area, so it is determined whether the processing program Pi exists or not, assuming that the i-th area is specified (step ST410). ), if it exists, launch the corresponding processing program Pi (step ST
411). Note that the processing program P for the i-th fan-shaped area
As shown in FIG. 3, i is stored as Pi334.

(10) In step ST409, θ
If it is determined that is larger than i, i is incremented for comparison with the next fan-shaped area (step ST
412), and if i does not exceed MAX, the process returns to step ST408 (step ST413).

[0026]

Effects of the Invention As explained above, according to the present invention, by specifying the display part of the pie chart, the corresponding process is performed, so that the display and the operation target are the same, and the operator can easily perform the operation. This provides an excellent effect in that the performance is improved and pie charts can be displayed even in a small display space.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a pie chart display device according to the present invention.

FIG. 2 is a diagram showing an example of a pie chart displayed on the pie chart display section 16.

FIG. 3 is a diagram showing a memory map of data stored in the RAM 12.

FIG. 4 is a diagram illustrating the processing flow of the button execution unit 17.

FIG. 5 is a diagram illustrating a state in which coordinates are input to a pie chart.

FIG. 6 is a diagram showing a display image of a conventional pie chart display device.

[Explanation of symbols]

10 CPU 11 Input device 12 RAM 13 ROM 14 Coordinate value detection section 15 Area determination unit 16 Pie chart display section

Claims (1)

[Claims] 1. A pie chart display device that displays a pie chart based on the center coordinates of the pie chart, the diameter or radius of the pie chart, and the coordinate values of each fan part in the pie chart, wherein each fan part a storage means for storing a central angle of the area; a coordinate value detection means for detecting a coordinate value indicated by an indicating device; and a coordinate value detection means for detecting a coordinate value indicated by the instruction device; a pie chart display device, comprising: an area discriminating means for discriminating whether the coordinate value is included in the fan section; and when the coordinate value is included in the fan section by the area discriminating means, a process corresponding to the fan section is executed. .