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====== <#barometer> ======

Object **Barometer** used to show average prices in some geographical place divided by property type, number of rooms, bedrooms etc. Normally we calculate actual average prices each month and we are using our listings to do this calculation. Calculated prices then are stored in database by month and year.

Main purpose of this object is to draw the graphic with polylines representing how the prices were changed in time.

===== Params used on creation of object =====

These params can be used in template on initialization of the object.

^ Name                                                                  ^ Mandatory ^ Default            ^ Description ^     
| <html><span style="color:#008000">id_geoplace</span></html>           | No (Yes, if "ip" is not defined)      |                    | **Our internal ID** of geoplace, used to load the information of barometer that connected with this geoplace. |
| <html><span style="color:#008000">ip</span></html>           | No (Yes, if "id_geoplace" is not defined      |                    | IPv4, we are trying to define the geoplace according to this IP. |
| <html><span style="color:#008000">property_category</span></html>           | No      | 1 (Residential)                 | Property category: residential or commercial. |
| <html><span style="color:#008000">property_type</span></html>               | Yes      |                | Property type (for example, 1 - apartments) |
| <html><span style="color:#008000">property_subtype</span></html>            | No       |                | Property subtype (for example, villas) |
| <html><span style="color:#008000">rooms</span></html>            | No       |                | Number of rooms |
| <html><span style="color:#008000">bedrooms</span></html>            | No       |                | Number of bedrooms |
| <html><span style="color:#008000">building_permit</span></html>            | No       |                | Applicable to lands. Represents the lands that have building permit (because the prices are different in few times if suck kind of permit is existing). |
| <html><span style="color:#008000">furnished</span></html>            | No       |                | Applicable to houses and apartments. Represents the properties that are furnished. Most of the time they are considerably more expensive. |
| <html><span style="color:#008000">fallback_use_parent</span></html>            | No       |                | If set to 1 means that if we don't find any data by given geoplace then try to use its parents one by one. |
| <html><span style="color:#008000">fallback_use_geoplace</span></html>            | No       |                | ID of geoplace that will be used to obtain barometer data if there's no data by given geoplace (or its parents if "fallback_use_parent" is set. |


===== Properties =====

^ Name                                                          ^ Type  ^ Description ^
| <html><span style="color:#008000">id</span></html>             | integer | ID of the barometer.|
| <html><span style="color:#008000">currency_code</span></html>             | integer | Currency code of the prices saved in this barometer. It is filled on loading from database. |
| <html><span style="color:#008000">criteria</span></html>             | -| Criteria of this barometer including property type, ID of geoplace, number of rooms etc. |
| <html><span style="color:#008000">years</span></html>             | [[en:public:developer:template_system:tags:barometer:years|TWinRE_Barometer_Years]]| Hash array of years. Keys are year labels, for example "2012". Each element contains the object "[[en:public:developer:template_system:tags:barometer:years:months|TWinRE_Barometer_Months]]". |
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