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Method and device for extracting line chart data and apparatus

A data extraction and line chart technology, applied in the computer field, can solve the problem that line chart data cannot be automatically formatted and processed, and achieve the effect of reducing analysis workload, making significant progress, and improving analysis accuracy

Inactive Publication Date: 2019-01-11
武汉优品楚鼎科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved the problem that the line chart data cannot be automatically formatted

Method used

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  • Method and device for extracting line chart data and apparatus
  • Method and device for extracting line chart data and apparatus
  • Method and device for extracting line chart data and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] One aspect disclosed by the present invention is a method for extracting line graph data, such as figure 1 The method flow shown includes:

[0052] Step 101, acquire data information of all data of a picture to be processed, the data information includes pixel coordinates and text data.

[0053] The research report generally adopts the PDF file format. Before the start of this embodiment, the PDF can be directly converted into a picture, and the picture can be converted into an SVG format file as the picture to be processed.

[0054] The SVG format file is called Scalable Vector Graphics in English. It is a scalable vector graphics. SVG provides three types of graphic objects: vector graphics (vectorgraphicshape, for example: a path composed of straight lines and curves), images (image), text ( text).

[0055] The coordinate system used by the SVG format file is: the upper left corner of the page is the (0,0) coordinate point, the coordinates are in pixels, the positi...

Embodiment 2

[0095] Such as Figure 4 As shown, another aspect disclosed by the present invention is to provide a device for extracting line graph data, including:

[0096] The data extraction module 201 is used to obtain the pixel coordinates of all data in the picture to be processed, pixel coordinate values ​​thereof, and text data and store them;

[0097] A pixel coordinate range determination module 202, configured to traverse the pixel coordinates of all the data to determine the position of the line graph, and establish the pixel coordinate range of the line graph;

[0098] Calculation module 203, used to calculate the unit data value corresponding to the unit pixel in the pixel coordinate range and the pixel difference between any point in the pixel coordinate range and the coordinate axis of the broken line graph in the pixel coordinate range, according to The pixel difference value and the unit data value calculate the data value corresponding to the pixel coordinate of the arbi...

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Abstract

The invention discloses a method and device for extracting line chart data and an apparatus. The method obtains the actual data corresponding to each point in a line chart by obtaining the pixel coordinates in the line chart, calculating the pixel difference value by using the pixel coordinates, and using the corresponding data to carry out the data conversion calculation. The invention relates tothe restoration of the data of the research report line chart in the automatic extraction of the research report, can automatically identify the line chart in the research report content of the pdf format, and obtain the data relations of the fold points and the non-fold points in the line chart.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a method, system and device for extracting and restoring data in a line chart by using coordinate parameters in an SVG format file. Background technique [0002] A research report is an institution's research report on a company or an industry, and is an important basis for many investors to make investment decisions. Charts are an important form of data representation in research reports, and their characteristics are intuitive and easy to understand and analyze. A line chart is a type of data chart that is frequently used in research reports. A line chart can display continuous data that changes over time (according to common scale settings), so it is very suitable for displaying trends in data at equal time intervals. Line charts are especially useful when there are many data points and the order in which they are displayed is important. [0003] In the prior art, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/904G06Q40/00
CPCG06Q40/00
Inventor 赵勇
Owner 武汉优品楚鼎科技有限公司
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