CN102708578A - Real-time curve drawing method - Google Patents
Real-time curve drawing method Download PDFInfo
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- CN102708578A CN102708578A CN2012101511946A CN201210151194A CN102708578A CN 102708578 A CN102708578 A CN 102708578A CN 2012101511946 A CN2012101511946 A CN 2012101511946A CN 201210151194 A CN201210151194 A CN 201210151194A CN 102708578 A CN102708578 A CN 102708578A
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- analog quantity
- curvilinear
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Abstract
The invention provides a real-time curve drawing method which comprises the following steps of: reading sampling time and analog quantity real-time values of sampling points; drawing a curvilinear figure by using the sampling time of the sampling points as abscissas and using the analog quantity real-time values of the sampling points as ordinates; comparing the analog quantity real-time values of a current sampling point and a previous sampling point and then drawing a quarter of period of cosine curve on the curvilinear figure by using the point with the small analog quantity real-time value as an origin of coordinates, using the point with the large analog quantity real-time value as a crest or trough point and using four pieces of sampling time as a period; translating the curvilinear figure forward by one period by using one piece of sampling time as the period, judging whether the sampling points on the curvilinear figure reach the boundary of the curvilinear figure, and if the sampling points on the curvilinear figure reach the boundary of the curvilinear figure, deleting the sampling points from a buffer zone; and entering the next circulation. By the method, a smooth, attractive and real real-time analog quantity curve can be drawn; and the method is simple and practical.
Description
Technical field
The present invention relates to a kind of curve plotting method, specifically, related to a kind of real-time curve method for drafting.
Background technology
The analog quantity instantaneous value is described out with the method for curvilinear figure, can reflect the variation tendency and the real-time status of analog quantity instantaneous value more intuitively, be convenient to our understanding and observation.
Because real-time curve only need reflect the data in the current and last relative short period section; Therefore just can curvilinear figure be fixed in a certain fixing a bit of time; Sampled data through the fixed sample point time obtains is carried out described point, and each point coupled together just can obtain a simple curve; Yet the curve that obtains through such method is the curve of a static state, and directly two described points is coupled together with straight line and will make curve seem only level and smooth, seems attractive in appearance inadequately, and is also true inadequately to the reflection of analog quantity.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The objective of the invention is deficiency, thereby the real-time curve method for drafting of simple, the practical carrier state of a kind of method is provided to prior art.
To achieve these goals, the technical scheme that the present invention adopted is: a kind of real-time curve method for drafting, and it may further comprise the steps:
Step 1, once read the sampling time and the real-time numerical value of analog quantity of a sampled point in order from buffer zone;
Step 2, on the curve description region, be horizontal ordinate, be ordinate curve plotting figure with sampling time of sampled point with the real-time numerical value of the analog quantity of sampled point;
Step 3, the real-time numerical value of the analog quantity of current sampling point and previous sampled point is carried out size relatively; Then, be true origin, be crest or trough point, on curvilinear figure, describe the cosine curve of four/one-period with four sampling times as the cycle with the less point of the real-time numerical value of analog quantity with the bigger point of the real-time numerical value of analog quantity;
Step 4, be the cycle with curvilinear figure translation one-period forward with a sampling time again, and judge the sampled point border of arrival curve figure whether on the curvilinear figure, if, then with this sampled point from buffer block deletion;
Step 5, return step 1, get into next circulation.
The relative prior art of the present invention has outstanding substantive distinguishing features and marked improvement, specifically, can draw level and smooth, attractive in appearance, real real time modelling discharge curve through this real-time curve method for drafting, and it has the simple and practical advantage of method.
Embodiment
Through embodiment, technical scheme of the present invention is done further detailed description below.
A kind of real-time curve method for drafting, it may further comprise the steps:
Step 1, once read the sampling time and the real-time numerical value of analog quantity of a sampled point in order from buffer zone; If first point is then directly got second point from buffer zone again;
Step 2, on the curve description region, be horizontal ordinate, be ordinate curve plotting figure with sampling time of sampled point with the real-time numerical value of the analog quantity of sampled point;
Step 3, the real-time numerical value of the analog quantity of current sampling point and previous sampled point is carried out size relatively; Then, be true origin, be crest or trough point, on curvilinear figure, describe the cosine curve of four/one-period with four sampling times as the cycle with the less point of the real-time numerical value of analog quantity with the bigger point of the real-time numerical value of analog quantity;
Step 4, be the cycle with curvilinear figure translation one-period forward with a sampling time again, and judge the sampled point border of arrival curve figure whether on the curvilinear figure, if, then with this sampled point from buffer block deletion;
Step 5, return step 1, get into next circulation.
Through above step, just can obtain a level and smooth dynamic real-time analog quantity curve attractive in appearance.
After curvilinear figure under the different conditions has been drawn, different curvilinear figures is arranged to various colors, for use in the difference different state.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (1)
1. a real-time curve method for drafting is characterized in that, this method may further comprise the steps: step 1, once read the sampling time and the real-time numerical value of analog quantity of a sampled point in order from buffer zone; Step 2, on the curve description region, be horizontal ordinate, be ordinate curve plotting figure with sampling time of sampled point with the real-time numerical value of the analog quantity of sampled point; Step 3, the real-time numerical value of the analog quantity of current sampling point and previous sampled point is carried out size relatively; Then, be true origin, be crest or trough point, on curvilinear figure, describe the cosine curve of four/one-period with four sampling times as the cycle with the less point of the real-time numerical value of analog quantity with the bigger point of the real-time numerical value of analog quantity; Step 4, be the cycle with curvilinear figure translation one-period forward with a sampling time again, and judge the sampled point border of arrival curve figure whether on the curvilinear figure, if, then with this sampled point from buffer block deletion; Step 5, return step 1, get into next circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101511946A CN102708578A (en) | 2012-05-16 | 2012-05-16 | Real-time curve drawing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101511946A CN102708578A (en) | 2012-05-16 | 2012-05-16 | Real-time curve drawing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102708578A true CN102708578A (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101511946A Pending CN102708578A (en) | 2012-05-16 | 2012-05-16 | Real-time curve drawing method |
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| CN (1) | CN102708578A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106095139A (en) * | 2016-05-30 | 2016-11-09 | 安徽慧视金瞳科技有限公司 | A kind of method promoting lines drafting speed in projection interactive system |
| CN106504298A (en) * | 2016-09-22 | 2017-03-15 | 珠海格力电器股份有限公司 | Curve plotting method and device |
| CN111223184A (en) * | 2019-11-19 | 2020-06-02 | 中煤航测遥感集团有限公司 | Target curve drawing method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090033665A1 (en) * | 2005-06-06 | 2009-02-05 | Hideyuki Iguchi | Curve drawing apparatus, curve drawing method, parking support system and vehicle |
| CN101706524A (en) * | 2009-11-18 | 2010-05-12 | 北京普源精电科技有限公司 | Data collection device and data collection method thereof |
| CN102111568A (en) * | 2009-12-28 | 2011-06-29 | 新奥特（北京）视频技术有限公司 | Method for drawing time-sharing tendency chart and character generator |
-
2012
- 2012-05-16 CN CN2012101511946A patent/CN102708578A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090033665A1 (en) * | 2005-06-06 | 2009-02-05 | Hideyuki Iguchi | Curve drawing apparatus, curve drawing method, parking support system and vehicle |
| CN101706524A (en) * | 2009-11-18 | 2010-05-12 | 北京普源精电科技有限公司 | Data collection device and data collection method thereof |
| CN102111568A (en) * | 2009-12-28 | 2011-06-29 | 新奥特（北京）视频技术有限公司 | Method for drawing time-sharing tendency chart and character generator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106095139A (en) * | 2016-05-30 | 2016-11-09 | 安徽慧视金瞳科技有限公司 | A kind of method promoting lines drafting speed in projection interactive system |
| CN106095139B (en) * | 2016-05-30 | 2018-10-12 | 安徽慧视金瞳科技有限公司 | A method of it promoting lines in projecting interactive system and draws speed |
| CN106504298A (en) * | 2016-09-22 | 2017-03-15 | 珠海格力电器股份有限公司 | Curve plotting method and device |
| CN106504298B (en) * | 2016-09-22 | 2019-07-23 | 珠海格力电器股份有限公司 | Curve plotting method and device |
| CN111223184A (en) * | 2019-11-19 | 2020-06-02 | 中煤航测遥感集团有限公司 | Target curve drawing method and device |
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Application publication date: 20121003 |