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Charts - Rain charts: Difference between revisions
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#Yearly Rain statistics per month = plotting the average, range and standard deviation for for the rainfall in each month in every year | #Yearly Rain statistics per month = plotting the average, range and standard deviation for for the rainfall in each month in every year | ||
Below you will find an example image of each chart and an explanation of the origin of the numbers | Below you will find an example image of each chart and an explanation of the origin of the numbers | ||
For the calculations the standard C# LINQ-functions Min, Max and Avg are used. For the standard deviation this [https://stackoverflow.com/questions/2253874/standard-deviation-in-linq LINQ-extension] is used with a modification for a minimum number of observations required of 2, if less the StdDev returns 0 (zero). | |||
== Daily Rain == | == Daily Rain == | ||
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The chart shows the monthly values of total rain that month for each year. The years have a different colour according to [[Charts#Colours|the colour scheme]]. The number of series directly visible is governed by the parameter [[Charts#MaxNrOfSeriesVisibileInGraph|MaxNrOfSeriesVisibleInGraphs]]. | The chart shows the monthly values of total rain that month for each year. The years have a different colour according to [[Charts#Colours|the colour scheme]]. The number of series directly visible is governed by the parameter [[Charts#MaxNrOfSeriesVisibileInGraph|MaxNrOfSeriesVisibleInGraphs]]. | ||
If the value of the inifile parameter [[Charts#UseNormalRainReference|UseNormalRainReference]] is ''Normal'' the user sees a black line representing the normal average values of total rainfall. When UseNormalRainReference is ''StationAverage'' the user sees a grey line representing the station average values of total rainfall. And obviously when the parameter value is ''Both'', the user sees both lines. In addition to the Station Average Value line, the estimator '''s''' for the standard deviation <math>\boldsymbol{\sigma}</math> belonging to that line, is always shown as a grey surface with the width of '''s''' for a specific month. | If the value of the inifile parameter [[Charts#UseNormalRainReference|UseNormalRainReference]] is ''Normal'' the user sees a black line representing the normal average values of total rainfall. When UseNormalRainReference is ''StationAverage'' the user sees a grey line representing the station average values of total rainfall. And obviously when the parameter value is ''Both'', the user sees both lines. In addition to the Station Average Value line, the estimator '''s''' for the [https://en.wikipedia.org/wiki/Standard_deviation standard deviation] <math>\boldsymbol{\sigma}</math> belonging to that line, is always shown as a grey surface with the width of '''s''' for a specific month. | ||
== Yearly Rain statistics == | == Yearly Rain statistics == | ||
[[File:Year Rain Statistics.jpg|thumb|right|Yearly Rain Statistics]] | [[File:Year Rain Statistics.jpg|thumb|right|Yearly Rain Statistics]] | ||
For each year the charts shows the average of the daily rainfall, the range of the daily rain fall and the estimator '''s''' for the standard deviation <math>\boldsymbol{\sigma}</math> belonging to that average. The colours of this chart are hardcoded and cannot be changed. Moving the mouse around provides the specific values in the tooltips. | For each year the charts shows the average of the daily rainfall, the range of the daily rain fall and the estimator '''s''' for the [https://en.wikipedia.org/wiki/Standard_deviation standard deviation] <math>\boldsymbol{\sigma}</math> belonging to that average. The colours of this chart are hardcoded and cannot be changed. Moving the mouse around provides the specific values in the tooltips. | ||
NOTE: the Y-axis scale is logarithmic. This type of scaling has provided for possible negative values to accommodate proper charting even if not mathematical correct.<br> | NOTE: the Y-axis scale is logarithmic. This type of scaling has provided for possible negative values to accommodate proper charting even if not mathematical correct.<br> | ||
