From 6cdbe52317d22225428ae8a38586143f7a29316e Mon Sep 17 00:00:00 2001 From: Richard Hattersley Date: Thu, 23 Jul 2015 16:57:22 +0100 Subject: [PATCH] Chapter 6 fixes --- ch06.adoc | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/ch06.adoc b/ch06.adoc index b7228bb9..142a291d 100644 --- a/ch06.adoc +++ b/ch06.adoc @@ -17,7 +17,7 @@ element of an axis. This is particularly useful for discrete axes observational data from a number of observing stations, it may be convenient to provide the names of the stations as labels for the elements of the station dimension (<>). - <> illustrates another application for labels. + <> illustrates another application for labels. Character strings labelling the elements of an axis are regarded as @@ -33,29 +33,16 @@ string-valued auxiliary coordinate variables. The **`coordinates`** attribute coordinate variable (see <>) -. -==== - ----- - ----- - - -==== - - - - [[geographic-regions]] ==== Geographic Regions -When data is representative of geographic regions which can be identified by names but which have complex boundaries that cannot practically be specified using longitude and latitude boundary coordinates, a labeled axis should be used to identify the regions. We recommend that the names be chosen from the list of link:$$http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standardized-region-names$$[standardized region names] whenever possible. To indicate that the label values are standardized the variable that contains the labels must be given the **`standard_name`** attribute with the value region . +When data is representative of geographic regions which can be identified by names but which have complex boundaries that cannot practically be specified using longitude and latitude boundary coordinates, a labeled axis should be used to identify the regions. We recommend that the names be chosen from the list of link:$$http://cf-pcmdi.llnl.gov/documents/cf-standard-names/standardized-region-names$$[standardized region names] whenever possible. To indicate that the label values are standardized the variable that contains the labels must be given the **`standard_name`** attribute with the value `region`. .Northward heat transport in Atlantic Ocean ==== ----- Suppose we have data representing northward heat transport across a set of zonal slices in the Atlantic Ocean. Note that the standard names to describe this quantity do not include location information. That is provided by the latitude coordinate and the labeled axis: +---- dimensions: times = 20 ; lat = 5 @@ -94,8 +81,8 @@ In some situations a dimension may have alternative sets of coordinates values. .Model level numbers ==== ----- Levels on a vertical axis may be described by both the physical coordinate and the ordinal model level number. +---- float xwind(sigma,lat); xwind:coordinates="model_level"; float sigma(sigma); // physical height coordinate