# quantity This page documents the **quantity** canonical concept dataset. The [complete XML file](https://developers.google.com/public-data/docs/canonical/quantity_xml) is also available for review. ## Basic Info | Name | Quantity concepts | | Description | DSPL quantity concepts. | | Namespace | http://www.google.com/publicdata/dataset/google/quantity | | URL | [http://code.google.com/apis/publicdata/docs/canonical/quantity.html](https://developers.google.com/public-data/docs/canonical/quantity) | |---|---| ## Provider | Name | Google Inc. | | Description | Google Inc. | | URL | | |---|---| ## Imported Namespaces | ID | URI | |---|---| | unit | [http://www.google.com/publicdata/dataset/google/unit](https://developers.google.com/public-data/docs/canonical/unit) | | geo | [http://www.google.com/publicdata/dataset/google/geo](https://developers.google.com/public-data/docs/canonical/geo) | | time | [http://www.google.com/publicdata/dataset/google/time](https://developers.google.com/public-data/docs/canonical/time) | ## Topics No topics defined. ## Concepts ### Concept: quantity | ID | quantity \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#quantity)\] | | Name | Quantity | | Type | float | | Description | Base concept for defining concept that represent numerical quantities. | | Attributes [unit](https://developers.google.com/public-data/docs/canonical/quantity#quantity_unit) [significant_digits](https://developers.google.com/public-data/docs/canonical/quantity#quantity_significant_digits) [decimal_places](https://developers.google.com/public-data/docs/canonical/quantity#quantity_decimal_places) | | ID (implied) | unit \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#quantity_unit)\] | | Concept | [unit:unit](https://developers.google.com/public-data/docs/canonical/unit#unit) | | Name | Unit | | Description | The unit of the quantity | |---|---| | ID | significant_digits \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#quantity_significant_digits)\] | | Name | Number of significant digits | | Type | integer | | Description | Specifies the number of significant digits to use when displaying the values of a metric concept. | |---|---| | ID | decimal_places \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#quantity_decimal_places)\] | | Name | Number of decimal places | | Type | integer | | Description | Specifies the number of decimal places to use for displaying the values of a metric concept. | |---|---| | | Properties | No local properties. | |---|---| ### Concept: amount | ID | amount \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#amount)\] | | Name | Amount | | Extends | [quantity](https://developers.google.com/public-data/docs/canonical/quantity#quantity) | | Description | Indicates that a numeric concept is an amount, i.e., a count of discrete elements. Example concept: Population, Gross Domestic Product. | | Attributes | No local attributes. | | Properties | No local properties. | |---|---| ### Concept: magnitude | ID | magnitude \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#magnitude)\] | | Name | Magnitude | | Extends | [quantity](https://developers.google.com/public-data/docs/canonical/quantity#quantity) | | Description | Indicates that a numeric concept is a magnitude, i.e., a continuous quantity that is measurable. Example concepts: Temperature. | | Attributes | No local attributes. | | Properties | No local properties. | |---|---| ### Concept: fraction | ID | fraction \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#fraction)\] | | Name | Fraction | | Extends | [magnitude](https://developers.google.com/public-data/docs/canonical/quantity#magnitude) | | Description | Indicates that a numeric concept represents a fraction, i.e., the division of two quantities. | | Attributes [denominator](https://developers.google.com/public-data/docs/canonical/quantity#fraction_denominator) [numerator](https://developers.google.com/public-data/docs/canonical/quantity#fraction_numerator) | | ID | denominator \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#fraction_denominator)\] | | Name | Denominator | | Type | concept | | Description | The denominator of the fraction. | |---|---| | ID | numerator \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#fraction_numerator)\] | | Name | Numerator | | Type | concept | | Description | The numerator of the fraction. | |---|---| | | Properties | No local properties. | |---|---| ### Concept: ratio | ID | ratio \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#ratio)\] | | Name | Ratio | | Extends | [fraction](https://developers.google.com/public-data/docs/canonical/quantity#fraction) | | Description | Indicates that a numeric concept is a ratio, i.e., a fraction of two quantities of the same nature. Example concept: Ratio of girls to boys in primary and secondary education. | | Attributes [is_percentage](https://developers.google.com/public-data/docs/canonical/quantity#ratio_is_percentage) [percentage_of](https://developers.google.com/public-data/docs/canonical/quantity#ratio_percentage_of) | | ID | is_percentage \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#ratio_is_percentage)\] | | Name | Is percentage | | Type | boolean | | Description | Set to true if this ratio is a percentage, set to false otherwise. | |---|---| | ID | percentage_of \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#ratio_percentage_of)\] | | Name | Percentage of | | Type | string | | Description | If this is a percentage, this attribute provides a descriptive text to display next to number that specifies what this is a percentage of. For instance, the "unemployment rate" metric has a percentage_of attribute set to: "of the labor force" to that the value reads "10.5% of the labor force". | |---|---| | | Properties | No local properties. | |---|---| ### Concept: index | ID | index \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#index)\] | | Name | Index | | Extends | [rate](https://developers.google.com/public-data/docs/canonical/quantity#rate) | | Description | A quantity that shows by its variations the changes of a magnitude over time or space, often normalized to a reference value. Example concept: Consumer Price Index. | | Attributes [base_value](https://developers.google.com/public-data/docs/canonical/quantity#index_base_value) [base_time](https://developers.google.com/public-data/docs/canonical/quantity#index_base_time) [base_location](https://developers.google.com/public-data/docs/canonical/quantity#index_base_location) | | ID | base_value \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#index_base_value)\] | | Concept | [quantity](https://developers.google.com/public-data/docs/canonical/quantity#quantity) | | Name | Base value | | Description | The reference value for the index (e.g., 100). | |---|---| | ID | base_time \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#index_base_time)\] | | Concept | [time:time_point](https://developers.google.com/public-data/docs/canonical/time#time_point) | | Name | Base time | | Description | The reference time the index is defined for. | |---|---| | ID | base_location \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#index_base_location)\] | | Concept | [geo:location](https://developers.google.com/public-data/docs/canonical/geo#location) | | Name | Base location | | Description | The reference location the index is defined for. | |---|---| | | Properties | No local properties. | |---|---| ### Concept: rate | ID | rate \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#rate)\] | | Name | Rate | | Extends | [ratio](https://developers.google.com/public-data/docs/canonical/quantity#ratio) | | Description | A quantity considered as a proportion of another quantity. Example concepts: Literacy rate, GDP per Capita, unemployment rate. | | Attributes | No local attributes. | | Properties | No local properties. | |---|---| ### Concept: change_rate | ID | change_rate \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#change_rate)\] | | Name | Change rate | | Extends | [rate](https://developers.google.com/public-data/docs/canonical/quantity#rate) | | Description | The rate at which some quantity changes. Example concept: GDP growth rate. | | Attributes [base_quantity](https://developers.google.com/public-data/docs/canonical/quantity#change_rate_base_quantity) | | ID | base_quantity \[[XML](https://developers.google.com/public-data/docs/canonical/quantity_xml#change_rate_base_quantity)\] | | Name | Base quantity | | Type | concept | | Description | The quantity (concept) that this is a change rate for. | |---|---| | | Properties | No local properties. | |---|---| ## Slices No slices defined. ## Tables No tables defined.