historical_graphs
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| historical_graphs [2018/12/24 16:30] – [Graph curve display features] emozolyak | historical_graphs [2018/12/26 11:38] – [Historical graphs] emozolyak | ||
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| *(1) - calendar for selecting date/period of view | *(1) - calendar for selecting date/period of view | ||
| *(2) - Graph title | *(2) - Graph title | ||
| - | *(3) - title of a register ( or its legend in the graph settings) and respective values in the selected point on the curve. Because with large time scale there can be more log data in a given pixel of the curve (which corresponds to one X-axis division formed as time span / grapsh area in pixels ) 3 values are shown - mininal, average and maximal. When there are values in the log database for all points of curve in a given time scale, all three values will be the same ( and the curve will look " | + | *(3) - title of a register ( or its legend in the graph settings) and respective values in the selected point on the curve. Because with large time scale there can be more log data in a given pixel of the curve (which corresponds to one X-axis division formed as time span / grapsh area in pixels ) 3 values are shown - mininal, average and maximal. When there are values in the log database for all points of curve in a given time scale, all three values will be the same ( and the curve will look " |
| *(4) - semitransparent color draws a swing between min and max values that the selected register took on a given plot section. | *(4) - semitransparent color draws a swing between min and max values that the selected register took on a given plot section. | ||
| *(5) - Line of averaged values. | *(5) - Line of averaged values. | ||
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| - | See explanation below for the 4, 5, 6 spots. | + | See explanation below for the spots #4, #5, #6 . |
| ==== Navigation in the graph viewing area ==== | ==== Navigation in the graph viewing area ==== | ||
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| In the case when for a selected plot scale 1 minute or more will fit into 1 pixel of the screen, then the average values (5) of the register and the zone (4) of the range of values for estimating the distribution of the minimum and maximum peaks will be displayed on the graph. This averaging is drawn using cached data from the database, corresponding to the current scale of the view (in the database, averaging is stored for 1, 2, 5, 15 and 60 minutes). This method allows you to optimize the work with graphs when viewing large amounts of data on a different scale, while maintaining the speed of work. | In the case when for a selected plot scale 1 minute or more will fit into 1 pixel of the screen, then the average values (5) of the register and the zone (4) of the range of values for estimating the distribution of the minimum and maximum peaks will be displayed on the graph. This averaging is drawn using cached data from the database, corresponding to the current scale of the view (in the database, averaging is stored for 1, 2, 5, 15 and 60 minutes). This method allows you to optimize the work with graphs when viewing large amounts of data on a different scale, while maintaining the speed of work. | ||
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| + | When the current view time scale matches log speed of the parameter, the (6) solid lined is drawn so that there is either exact value, or its average / min / max are very close to each other. | ||
historical_graphs.txt · Last modified: 2023/03/23 09:56 by emozolyak