WSL/SLF GitLab Repository

Initial commit authored by boehmd's avatar boehmd
This function calculates the [bioclimate](Input-Data#bioclimate) that is needed for the TreeMig simulation. For a given grid, it calculates yearly degree days, winter temperature and drought stress values for each cell.
Following data is needed to caluculate the bioclimate:
### Input
| parameter | description | type |
| ------ | ------ | ------ |
| studyArea | A `StudyArea` object. Obtained with [getStudyArea()](getStudyArea()) | `StudyArea` |
| climData | [climate data](Input-Data#climate-data) with temperature and precipitation data | `data.frame` |
| slopeAspectData | [slope aspect data](Input-Data#slope-aspect-data) | `data.frame` |
| bucketSizeData | [bucket size data](Input-Data#bucket-size-data) | `data.frame` |
### Output
Returns a `data.frame` object with the columns: `lon`, `lat`, `year`, `DD`, `WiT` and `DrStr`
### Notes
* The format of the different input `data.frames` are listed here: [Input Data](Input-Data)
### Used in
* [sampleBCBeforeAndAfterMeasurements()](sampleBCBeforeAndAfterMeasurements())
* [setTreeMigData()](setTreeMigData())
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