frudawski

sundiagram

The sundiagram function creates an illustration of the sun path over the year for a specific geographic location. The default geographical settings are set in the file “LT_location.mat”. Change the settings to your preferred location and set the file to read-only in order to prevent your settings from being overwritten with the default values in future versions.

Usage:

sundiagram(coord,offset,date,time,clr)

Where:

ParameterDescription
coordSpecifies the geographic coordinates as 1 \times 2 vector. Default: [13.326 52.514] for Berlin, Germany. You can change the preference in the “LT_location.mat” file.
offset
(optional)
Defines the offset for local time adjustment to UTC, e.g. 2 for Central European Summer Time (CEST). Default is set to Berlin, Germany [13.326 52.514]. You can change the preference in the “LT_location.mat” file.
date
(optional)
Specifies the date in ‘DD.MM.YYYY’ format.
time
(optional)
Specifies the UTC in ‘hh:mm:ss’ or ‘hh:mm’ format.
clr
(optional)
Specifies the colour in RGB for the user defined date and time plot, default: [0.8 0.4 0.0] (orange).

Examples

Sun path diagram for Berlin:

sundiagram

Result:

Sun path diagram for Athens:

sundiagram([37.978 23.728])

Result:

Sun path diagram for Athens with additional date and time and 3 h offset:

sundiagram([37.978 23.728],3,'15.04.2020','09:35:15')

Result:

Reference

DIN EN 17037:2019-03: Daylight in buildings. 2019.

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