JP3336757B2 - Graph display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display of a graph and information attached to the graph, and more particularly to an apparatus for displaying information attached to a graph display area.

[0002]

2. Description of the Related Art When displaying a graph, a graph display based on data, fixed information such as a vertical axis and a horizontal axis of the graph, and auxiliary information supplementing the data displayed in the graph, such as a numerical value and a legend of the data displayed in the graph, are displayed. Are required to be displayed simultaneously on the same screen. Conventionally, when a graph, fixed information, attached information, and the like are displayed on the same screen, as shown in a display example of the conventional graph display device of FIG. 9, a graph display area 30, a fixed information display area 10, an attached information Display area 20
Were set separately. In particular, the auxiliary information display area 20
The display width is set so as to be displayed in another area because it is not integratedly displayed like the graph display area 30 and the fixed information display area 10.

[0003]

However, if the display width is set so that the graph and the auxiliary information are displayed in different areas on the same screen, the graph display area is narrowed, making it difficult to read the data. Further, if the display widths of the graph display area and the auxiliary information display area are displayed without reducing the display width, both display areas may overlap with each other, and a part of the data may not be read.

In order to solve the above-mentioned problem, the present invention is to automatically determine the display position of the attached information so that the attached information does not overlap with the graph when the attached information is displayed on the graph. With the goal. On the other hand, a plurality of display positions of the additional information that display the additional information so as not to overlap the graph are assumed. Therefore, the optimum accessory information is determined from a plurality of assumed display positions, and the processing becomes complicated.

Therefore, in order to solve the above problem, the present invention sets a plurality of display positions of the accessory information in advance, selects an optimum display position from the set candidates, and efficiently changes the display position. The purpose is to decide. Further, in a real-time graph for displaying a changing event in a graph, the shape of the graph changes in chronological order according to data after the start of the graph display, and it is particularly important to read the latest data change. Therefore, it is necessary to prevent the display of the graph including the latest value from becoming difficult to see due to the attached information or the like.

In order to solve the above-mentioned problem, the present invention prevents a graph for displaying the latest data from being overlapped with the auxiliary information in the case of a real-time graph, and automatically sets the display positions of the graph and the auxiliary information. The purpose is to determine.

[0007]

According to a first aspect of the present invention, in a graph display device for displaying auxiliary information in a display area of a graph, the display positions of the graph and the auxiliary information are compared to determine that the graph and the auxiliary information overlap. In this case, a display control means for changing the display position of the attached information is provided.

According to a second aspect of the present invention, there is provided a graph display device, wherein the display position of the attached information is selected from a plurality of preset candidates. The graph display device according to the third aspect of the present invention includes a display control unit that determines a display position of the attached information based on only the graph of the latest data when displaying a real-time graph displaying data that changes in time series. It is characterized by the following.

[0009]

According to the first aspect of the present invention, the display position of the attached information is changed when the display position of the attached information is compared with the display position of the attached information. It becomes possible. In the invention of claim 2,
In order to select the display position of the attached information from a plurality of candidates set based on the tendency of the data to be displayed in a graph in advance,
The display position of the attached information can be efficiently determined.

According to the third aspect of the present invention, when the target graph is a real-time graph, the additional information determines the display position based on only the graph of the latest data, so that the additional information is displayed on the already displayed data. Alternatively, it is possible to display the attached information and the graph of the latest data so that they do not overlap.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic flowchart of the present invention, FIG. 2 is a system configuration diagram of one embodiment of the present invention, FIG. 3 is a display example of one embodiment of the present invention, FIG. 4 is a data configuration diagram of one embodiment of the present invention, FIG. 5 is a graph data and graph display screen transition according to an embodiment of the present invention, FIG. 6 is a flowchart according to an embodiment of the present invention,
FIG. 7 is a display example of another embodiment of the present invention, and FIG. 8 is a flowchart of another embodiment of the present invention.

The overall flow of the present invention will be described with reference to the schematic flowchart of FIG. When data to be graphed is input (step 1-1), a graph display coordinate position based on the input data is obtained (step 1-2). Next, it is determined whether or not the display of the graph overlaps the display of the attached information (step 1-3). If it is determined that the attached information is overlapped, the display position of the attached information is changed to a position that does not overlap (step 1-4). , A graph and additional information are displayed (step 1-5).

An apparatus for displaying a graph of data that changes in real time, which is an embodiment of the present invention, will be described with reference to FIGS. FIG. 2 shows a system configuration according to an embodiment of the present invention. Data to be graphed is data that changes in real time, such as temperature and water volume, and is detected by the sensor 120. The data detected by the sensor 120 is sent to the processing unit 1 via the input / output control unit 140.
30 is notified. Alternatively, when graphing data set by an operator or the like, the data is input from the KB 150 and notified to the processing unit 130 via the input / output control unit 140. The processing unit 130 includes a CPU 170, a memory 110, and the like, and performs processing of the present invention on data notified via the input / output control unit 140. The data to be displayed as a graph processed by the processing unit 130 is displayed on a graphic display device (hereinafter referred to as GD) 160 via the input / output control unit 140. When the display position of the additional information referred to in the processing by the processing unit 130 is set in advance by the operator, the KB 150 can be used to input the information using an editor or the like.

FIG. 3 shows a display example of a device for displaying a graph of data that changes in real time. The display screen includes fixed information 80 such as a vertical axis and a horizontal axis of the graph screen and a display area 1.
0, an auxiliary information 90 such as a numerical value representing the contents to be plotted in a graph, and a display area 20, and a graph 100 and a display area 30 of continuously input data.
The data graph 100 is a graph of P1, P2, and P3 from the top. Since the data reference value differs for each graph, the vertical axis is set separately for each graph. The attached information 90 displays a numerical value plotted for each graph.

The graphs on the graph display device of this embodiment are displayed in chronological order from left to right. The graph is sequentially displayed from left to right, and the auxiliary information starts to be displayed from the display start position 40 on the display start coordinate value screen, and is displayed to the display end position 50 on the screen. It is assumed to be displayed from 40. FIG. 4 is a diagram showing the data configuration diagram of the auxiliary information display coordinate storage table 60 and the currently used table address 70, which are data configuration diagrams in one embodiment of the present invention. Each attached information display area is composed of a start coordinate and an end coordinate, and whether it overlaps with the graph is determined by whether the graph is included in a rectangle composed of the start coordinate and the end coordinate. In the present embodiment, the display position of the attached information of the graph is set in the attached information display coordinate storage table 60 by an operator or the like in advance. The display position of the latest attached information is managed by the currently used table address 70. Since the currently used table address 70 points to the head of the attached information display coordinate storage table 60 as an initial value, the start coordinates 60a (600, 30) of the attached information display area coordinates of the display area 1 are set.
0) and the end information 60b (800, 500), the attached information is initially displayed in a rectangle. When the coordinate value obtained from the data is (650, 350), it is determined that the graph and the attached information overlap because they are included in the attached information rectangle. If it is determined that they overlap, the subsequent table in the attached information display coordinate storage table 60 is searched. The start coordinates 60c (100, 30) of the coordinates of the attached information display area of the next display area 2 in the attached information display coordinate storage table 60.
0) and the end coordinates 60d (300, 500), it is determined that they do not overlap with the coordinate values of the graph, so the current use table address 70 is changed to indicate the start coordinates 60c of the display area 2. When it is determined that the display area 2 overlaps with the coordinate values of the graph, the start coordinate 60e (100, 300) and the end coordinate 60f (300, 500) of the additional information display area coordinates of the display area 3 are compared. Become. The start position and end position of each display area in the attached information display coordinate storage table 60 are set in advance by an operator or the like. Therefore, if the start position and the end position of the display area are set based on the theoretical value of the target graph display data, it is possible to efficiently search the auxiliary information display coordinate storage table 60 in determining the display position. . Further, if the attached information display coordinate storage table 60 is a data file that can be modified by an editor or the like, an operator or the like can easily set the data file.

FIG. 5 is an explanatory diagram showing transition of graph data and a graph display screen according to one embodiment of the present invention. FIG. 5 shows data for each time and transition of the graph display screen with respect to the data. FIG. 5A shows an initial screen before data input. Prior to the graph table, the vertical axis of the graph,
The fixed information on the horizontal axis is displayed, and the attached information is displayed at the position initially set in the attached information display coordinate storage table 60. FIG. 5B shows that the data at time t1 are P1, P
2 and P3 show the state where the data of 80, 35 and 3 are notified from the sensor or the like. The notified data is converted into coordinate values to be displayed in a graph and displayed on a graph. Here, since the data to be displayed on the graph and the attached information do not overlap, the attached information remains displayed at the initially set position. FIG. 5C shows the data at time t2 as
This shows a state in which data of 90, 40, and 8 are notified to sensors P1, P2, and P3 from sensors and the like. Since the data to be displayed in the graph and the attached information do not overlap, the attached information remains displayed at the initially set position. FIG. 5 (4)
As data at time t3, a state is shown in which data at 90, 50, and 8 are notified from sensors and the like at P1, P2, and P3, respectively. The notified data is converted into coordinate values for displaying a graph, and as described with reference to FIG. 4, it is determined whether or not the data is included in a rectangle indicated by the coordinate values for displaying the additional information. FIG.
In the data of (4), the additional information is displayed according to the coordinates of another display area on the additional information display coordinate storage table because it is determined that the data overlaps.

FIG. 6 shows a flowchart of a graph display process according to one embodiment of the present invention. The operation will be described below with reference to the flowchart of FIG. 6 and the transition of the graph display screen of FIG. Prior to the display of the graph, a display area start coordinate and an end coordinate are set in the auxiliary information display coordinate storage table 60 in order to set an initial value and a movement position of the display position of the auxiliary information (step 6-1). In the present embodiment, a graph is displayed in chronological order from the left to the right of the screen, and it is determined whether the display of one screen is completed (step 6-2). When the display of one screen is completed, the screen displaying the graph is deleted. , Display data from the next point in time. Therefore, at the start of each screen display,
As shown in FIG. 5A, the fixed information 80 such as the vertical axis of the graph is displayed, and according to the initial display position set in the attached information display coordinate storage table 60 shown in FIG. indicate. In this case, the attached information 90 indicates the contents plotted on the graph by numerical values (step 6-3).

When data is input (step 6-
5) Perform coordinate transformation to display the target data on the display device (step 6-6). It is determined whether or not the result of the coordinate conversion falls within the range of the present display area 1 start coordinate 60a and display area 1 end coordinate 60b set in the attached information display coordinate storage table 60 (step 6-7). If it is not within the range, the graph 100 is displayed without changing the position of the display area 20 of the attached information 90 as shown in FIGS. 5 (2) and (3) (step 6-9).

As the graph display progresses with the passage of time, as shown in FIG. 5 (4), the graph to be displayed is determined by the display area 1 start coordinate 60a of the auxiliary information and the display area 1
To enter the range of the end coordinates 60b, the current use table address 70 is updated to the display area 2 start coordinates 60c (step 6-8), the attached information displayed is deleted, and the updated current use table address 70 indicates. The attached information is displayed together with the graph in the rectangular area indicated by the display area 2 start coordinates 60c and the display area 2 end coordinates 60d (step 6-).
9). Therefore, as shown in FIG. 5D, the other display area 2 set in the auxiliary information display coordinate storage table 60 is set.
, The attached information display position is moved and displayed.

The above processing is terminated by an end instruction from the operator or the like (step 6-4). The graph of the data that changes in real time described in the present embodiment is a graph in which the graph changes from left to right on the display screen, but may be a graph in which the data changes in time series from top to bottom. In addition, the shape of the graph does not prevent other shapes as long as it is a graph of data that changes in real time.

In the present embodiment, the display position of the attached information has been described as being selected from a plurality of candidates set in advance by an operator or the like. However, if the display position is changed so that the graph and the attached information do not overlap with each other. The display position of the attached information may be moved based on the designation of the direction, the distance, and the like.

[0022]

[Other Embodiments] In the above-described embodiment, a graph of data changing in real time has been described. However, even in a normal graph, the display positions of the graph and the attached information are compared so that the display of the graph and the attached information does not overlap. If they are displayed in the range, they are within the scope of the present invention. Hereinafter, a description will be given with reference to FIGS.

FIG. 7 shows another embodiment of the present invention.
4 shows a display screen of a normal graph display device. On the display screen, fixed information 80 such as a vertical axis and a horizontal axis of the graph screen and the display area 10, auxiliary information 90 such as a legend, and a display area 20 are displayed.
Then, a data graph 100 and a display area 30 are displayed. In the present embodiment, since the display area of the additional information is included in the display area of the graph, the display of the graph and the additional information is not overlapped in the display.

Also in this embodiment, the display position of the additional information is determined according to the display position of the additional information of the graph set in advance by the user shown in FIG. Therefore, the display area of the attached information is composed of the start coordinates and the end coordinates, and whether the graph overlaps the graph is determined by whether the graph is included in the rectangle composed of the start coordinates and the end coordinates. The display position of the latest attached information is managed by the currently used table address 70.

Next, the operation will be described with reference to the flowchart of the graph display processing in the embodiment of FIG. Prior to displaying the graph, the auxiliary information display coordinate storage table 60 is used to determine the initial value of the display position of the auxiliary information and the movement position.
The display area start coordinates and end coordinates are set (step 8-1). The initial value of the display position of the attached information is the first coordinate of the attached information display coordinate storage table 60 in accordance with the specification of the current use table address 70 shown in FIG.

When data is input (step 8-
2) Perform coordinate conversion of graph display based on the data (step 8-3). It is determined whether the result of the coordinate conversion is within the range of the present display area 1 start coordinate 60a and the display area 1 end coordinate 60b set in the attached information display coordinate storage table 60 (step 8-4). If not, the current use table address 70 remains as initially specified. If it is included in the rectangular range indicated by the display area 1 start coordinate 60a and the display area 1 end coordinate 60b of the attached information, the current use table address 70 is updated to the display area 2 start coordinate 60c (step 8-5). Finally, according to the display position determined by the above processing, the graph 10
0 and the attached information 90 are displayed (step 8-6).

Although the graph described in the present embodiment is a line graph, any graph that displays additional information on the graph display screen does not prevent the graph from having another shape such as a scatter diagram.

[0028]

As described above, according to the present invention,
Since the display position of the additional information and the like is determined based on the display position of the graph derived from the target data, the graph and the additional information can be automatically displayed while automatically maintaining a sufficient display area. Therefore, it is possible to efficiently use the limited display area.

By setting a plurality of candidates for the display position of the accessory information in advance, the display position can be efficiently determined from the candidates. Furthermore, if the display position candidates of the additional information are set so as not to overlap with the graph according to the tendency of the data displayed in the graph, the display position can be determined more efficiently. On the other hand, when it is important to read the latest event change such as a real-time graph, the attached information may be displayed on a graph of past data that has already been displayed. According to the present invention, the display position of the additional information is determined so that the graph based on the latest data and the additional information do not overlap, so that the display area can be used efficiently.

[0030]

[Means for Solving the Problems] [Brief description of the drawings]

FIG. 1 is a schematic flowchart of the present invention.

FIG. 2 is a system configuration diagram of an embodiment of the present invention.

FIG. 3 is a display example of one embodiment of the present invention.

FIG. 4 is a data configuration diagram according to an embodiment of the present invention.

FIG. 5 shows transition of graph data and a graph display screen in one embodiment of the present invention.

FIG. 6 is a flowchart of one embodiment of the present invention.

FIG. 7 is a display example according to another embodiment of the present invention.

FIG. 8 is a flowchart of another embodiment of the present invention.

FIG. 9 is a display example of a conventional graph display device.

[Explanation of symbols]

 In the figure, 10: fixed information display area 20: attached information display area 30: graph display area 40: display start position 50: display end position 60: attached information display coordinate storage table 70: currently used table address 80: fixed information 90: attached Information 100: graph 110: memory 120: sensor 130: processing unit 140: input / output control unit 150: KB 160: GD 170: CPU.

Continuation of front page (56) References JP-A-63-24477 (JP, A) JP-A-6-215148 (JP, A) JP-A-6-215146 (JP, A) JP-A-5-250485 (JP) JP-A-5-108057 (JP, A) JP-A-3-214367 (JP, A) JP-A-3-175586 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB Name) G06T 11/20 120 G09G 5/00

Claims (1)

(57) [Claims] 1. A real-time graph display device for calculating display coordinate values of data to be displayed on a screen based on data that changes in time series and displaying graph data, wherein a plurality of displays of auxiliary information displayed together with the real-time graph. When the position is stored in the auxiliary information display coordinate storage table that stores the coordinate values on the screen and the display coordinate value of the graph data that is newly displayed on the screen based on the latest input data, the position is registered in the auxiliary information display coordinate storage table. It was compared with a plurality of coordinate values, the latest
A display control means for extracting the coordinate value of the additional information not including the display coordinate value of the graph data to be newly displayed on the screen based on the input data, and displaying the additional information.