Data visualization method and apparatus

• US 10,438,386 B2
• Filed: 04/13/2018
• Issued: 10/08/2019
• Est. Priority Date: 10/13/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Ni, Bing, Yuan, Mingxuan, Qu, Huamin
• Primary Examiner(s): Amin, Jwalant
• Application Number:
  US15/952,518
• Publication Number:
  US 20180232917A1
• Time in Patent Office: 543 Days
• CPC Class Codes: G06T 11/206 Drawing of charts or graphs

Abstract

The present disclosure provides a data visualization method and apparatus. The method includes: displaying a distribution curve diagram by using a display device, where the distribution curve diagram is used to represent time-based distribution of multiple pieces of spatial-temporal data, and the distribution curve diagram includes a timeline, a curve changing with the timeline, and an irregular region enclosed by the curve; and displaying a tree map in the irregular region by using the display device, where the tree map divides the irregular region into m sub-regions that are in a one-to-one correspondence with m regions, and an area of each of the m sub-regions is used to indicate an amount of spatial-temporal data distributed in a region corresponding to each sub-region. The present disclosure implements visualization of spatial-temporal data by using the tree map.

Claims

1. A data visualization method, comprising:

obtaining multiple pieces of spatial-temporal data, wherein each of the multiple pieces of spatial-temporal data records a time and a location at which an event occurs, locations recorded by the multiple pieces of spatial-temporal data are distributed in m preset regions, and m≥

2;

determining time-based distribution of the multiple pieces of spatial-temporal data according to time recorded by the multiple pieces of spatial-temporal data;

displaying a distribution curve diagram by using a display device, wherein the distribution curve diagram is used to represent the time-based distribution of the multiple pieces of spatial-temporal data, and the distribution curve diagram comprises a timeline, a curve changing with the timeline, and an irregular region enclosed by the curve;

determining distribution of the multiple pieces of spatial-temporal data in the m regions according to the locations recorded by the multiple pieces of spatial-temporal data; and

displaying, by using the display device, a tree map in the irregular region according to the distribution of the multiple pieces of spatial-temporal data in the m regions, wherein the tree map divides the irregular region into m sub-regions that are in a one-to-one correspondence with the m regions, and an area of each of the m sub-regions is used to indicate an amount of spatial-temporal data distributed in a region corresponding to each sub-region, wherein displaying the tree map dividing the irregular region further comprises deploying m points in the irregular region, the m points being in a one-to-one correspondence with the m regions, and determining one or more division locations of the irregular region according to locations of the m points in the irregular region and a distribution of amounts of the spatial-temporal data in the m regions, the division locations of the irregular region being used for dividing the irregular region into the m sub-regions, such that each of the m sub-regions includes one point of the m points, and wherein at least one of the m sub-regions is bounded partially by the curve.

2. The method according to claim 1, wherein the timeline is a circular timeline based on polar coordinates, the curve is located in a circle enclosed by the circular timeline, and the irregular region is enclosed by the curve and radii of the circle.

3. The method according to claim 1, wherein the timeline is a rectilinear coordinate axis, and the irregular region is enclosed by the curve, the rectilinear timeline, and a vertical line perpendicular to the timeline.

4. The method according to claim 1, wherein the multiple pieces of spatial-temporal data are spatial-temporal data in a first subset of a spatial-temporal data set, the spatial-temporal data set comprises n subsets, the first subset is any subset in the n subsets, the n subsets are in a one-to-one correspondence with n consecutive time segments, and a time recorded by spatial-temporal data in each subset falls within a time segment corresponding to each subset;

and the method further comprises;

displaying, on the timeline by using the display device, a distribution curve diagram and a tree map that are corresponding to another subset, other than the first subset, in the n subsets.

5. The method according to claim 1, wherein the timeline is a circular timeline based on polar coordinates, and a time corresponding to the circular timeline is 24 hours of a day.

6. A data visualization apparatus, comprising:

an obtaining module, configured to obtain multiple pieces of spatial-temporal data, wherein each of the multiple pieces of spatial-temporal data records a time and a location at which an event occurs, locations recorded by the multiple pieces of spatial-temporal data are distributed in m preset regions, and m≥

2;

a first determining module, configured to determine time-based distribution of the multiple pieces of spatial-temporal data according to time recorded by the multiple pieces of spatial-temporal data;

a first display module, configured to display a distribution curve diagram by using a display device, wherein the distribution curve diagram is used to represent the time-based distribution of the multiple pieces of spatial-temporal data, and the distribution curve diagram comprises a timeline, a curve changing with the timeline, and an irregular region enclosed by the curve;

a second determining module, configured to determine distribution of the multiple pieces of spatial-temporal data in the m regions according to the locations recorded by the multiple pieces of spatial-temporal data; and

a second display module, configured to display, by using the display device, a tree map in the irregular region according to the distribution of the multiple pieces of spatial-temporal data in the m regions, wherein the tree map divides the irregular region into m sub-regions that are in a one-to-one correspondence with the m regions, and an area of each of the m sub-regions is used to indicate an amount of spatial-temporal data distributed in a region corresponding to each sub-region, wherein displaying the tree map dividing the irregular region further comprises deploying m points in the irregular region, the m points being in a one-to-one correspondence with the m regions, and determining one or more division locations of the irregular region according to locations of the m points in the irregular region and a distribution of amounts of the spatial-temporal data in the m regions, the division locations of the irregular region being used for dividing the irregular region into the m sub-regions, such that each of the m sub-regions includes one point of the m points, and wherein at least one of the m sub-regions is bounded partially by the curve.

7. The apparatus according to claim 6, wherein the timeline is a circular timeline based on polar coordinates, the curve is located in a circle enclosed by the circular timeline, and the irregular region is enclosed by the curve and radii of the circle.

8. The apparatus according to claim 6, wherein the timeline is a rectilinear coordinate axis, and the irregular region is enclosed by the curve, the rectilinear timeline, and a vertical line perpendicular to the timeline.

9. The apparatus according to claim 6, wherein the multiple pieces of spatial-temporal data are spatial-temporal data in a first subset of a spatial-temporal data set, the spatial-temporal data set comprises n subsets, the first subset is any subset in the n subsets, the n subsets are in a one-to-one correspondence with n consecutive time segments, and a time recorded by spatial-temporal data in each subset falls within a time segment corresponding to each subset;

and the apparatus further comprises;

a third display module, configured to display, on the timeline by using the display device, a distribution curve diagram and a tree map that are corresponding to another subset, other than the first subset, in the n subsets.

10. The apparatus according to claim 6, wherein the timeline is a circular timeline based on polar coordinates, and a time corresponding to the circular timeline is 24 hours of a day.

11. A non-transitory computer-readable medium comprising code which, when executed by a processor, causes the processor to perform a method comprising:

obtaining multiple pieces of spatial-temporal data, wherein each of the multiple pieces of spatial-temporal data records a time and a location at which an event occurs, locations recorded by the multiple pieces of spatial-temporal data are distributed in m preset regions, and m≥

2;

determining time-based distribution of the multiple pieces of spatial-temporal data according to time recorded by the multiple pieces of spatial-temporal data;

displaying a distribution curve diagram by using a display device, wherein the distribution curve diagram is used to represent the time-based distribution of the multiple pieces of spatial-temporal data, and the distribution curve diagram comprises a timeline, a curve changing with the timeline, and an irregular region enclosed by the curve;

determining distribution of the multiple pieces of spatial-temporal data in the m regions according to the locations recorded by the multiple pieces of spatial-temporal data; and

displaying, by using the display device, a tree map in the irregular region according to the distribution of the multiple pieces of spatial-temporal data in the m regions, wherein the tree map divides the irregular region into m sub-regions that are in a one-to-one correspondence with the m regions, and an area of each of the m sub-regions is used to indicate an amount of spatial-temporal data distributed in a region corresponding to each sub-region, wherein displaying the tree map dividing the irregular region further comprises deploying m points in the irregular region, the m points being in a one-to-one correspondence with the m regions, and determining one or more division locations of the irregular region according to locations of the m points in the irregular region and a distribution of amounts of the spatial-temporal data in the m regions, the division locations of the irregular region being used for dividing the irregular region into the m sub-regions, such that each of the m sub-regions includes one point of the m points, and wherein at least one of the m sub-regions is bounded partially by the curve.

12. The non-transitory computer-readable medium according to claim 11, wherein the timeline is a circular timeline based on polar coordinates, the curve is located in a circle enclosed by the circular timeline, and the irregular region is enclosed by the curve and radii of the circle.

13. The non-transitory computer-readable medium according to claim 11, wherein the timeline is a rectilinear coordinate axis, and the irregular region is enclosed by the curve, the rectilinear timeline, and a vertical line perpendicular to the timeline.

14. The non-transitory computer-readable medium according to claim 11, wherein the multiple pieces of spatial-temporal data are spatial-temporal data in a first subset of a spatial-temporal data set, the spatial-temporal data set comprises n subsets, the first subset is any subset in the n subsets, the n subsets are in a one-to-one correspondence with n consecutive time segments, and a time recorded by spatial-temporal data in each subset falls within a time segment corresponding to each subset;

and the method further comprises;

displaying, on the timeline by using the display device, a distribution curve diagram and a tree map that are corresponding to another subset, other than the first subset, in the n subsets.

15. The non-transitory computer-readable medium according to claim 11, wherein the timeline is a circular timeline based on polar coordinates, and a time corresponding to the circular timeline is 24 hours of a day.