defines the type of the theme. This is the graphical representation, which can be a colorized shapes (CHOROPLETHE), or chart objects (bar charts, pies, donuts,...).

A type definition is a string with a combination of type variables, separated by '|'.

Example: 'CHOROPLETHE|EQUIDISTANT'

defines the colors to be used in the theme (default: momochrome blue)

Example: [ "red","blue","green" ]

defines the data to use by the theme. the value is a sequence of parameter to define:

1. the name of the data table (arbitrary, but must be unique)
2. the type of the data source
3. the url of the data source
4. [optional] a javascript function call to to prepare the data

Example: 'themeDataObj csv url(http://mysite/mydata/data.csv)'

define the name of the row of the above defined data table, where to find the values which can be used to identify the layer items (shapes or points) for the theme creation.

Example: 'comune'

defines a theme based on map shapes (polygons) that will be colored by value classes and a color scheme

defines a theme visualized by charts positioned on the map

simple circle bubbles with size and color options and optional value display

rectangulars with size and color options and optional value display

bars, barcharts with several bars and stacked bars

bars with a pointing top, usefull if we have ranges from negative to positive values

pie chart with one or more parts

a donut chart with one or more parts

a theme visualized by symbols on the map

a special theme to create one or more buffers around map objects, which can be points, lines or shapes;
the following example draws buffers of 500 meters around every school in the layer 'schools'

}
"layer": "schools",
"style": {
  "type": "CHART|BUFFER|VALUE|NOINFO",
  "colorscheme": ["#ffffff"],
  "buffersize":"500",
  "borderstyle":"dashed",
  "align":"center",	
  }
}

equidistant value classes

logarithmical value classes

quantile value classes; same number of members in every class

every value represents a color class

with multiple fields, show the color of the field with the highest value 

with multiple fields, show the color of the field with the deviation from mean (in %) 

with multiple fields, show the value with the highest deviation (in standard deviation)

with multiple fields and type CHART, show the deviation of all fields by +/- pointers:
example:  'type':'CHART|BAR|POINTER|OFFSETMEAN'

class ranges are defined explicitly by a 'ranges' parameter; example:

"style": {
  "type": "CHOROPLETHE|RANGES",
  "colorscheme": ["5","#FFFDD8","#B5284B","2colors","#FCBA6C"],
  "ranges":"-100,-10,0,10,100"
}

value = [field] - [field100]

value = [field]/[field100]

value = [field]/[field100]*100

value = [field]/[field100]*1000

value = [field]/[field100]*100 - 100

value = 100 - [field]/[field100]*100

value = Math.round([field]*[field100]/100)

value = Math.round([field]*[field100]/100)

value = [field]*[field100]

allow negative values

allow zero values

define the aggregation mode; if values are absolute, you may define 'SUM';
if values are in percent, you don't want SUM but MEAN, which is the default

the size of the chart graphics represents the value

for 3d charts; the volume of the chart graphic represents the value

for 2d charts; the surface of the chart graphic represents the value

for wider value ranges, this uses power of 4 to flatten the chart sizes

use the logarithm of the value to size the chart graphics

dynamic opacity by the value; lower values get transparent

dynamic opacity to emphasize the minimum values; higher values get transparent

dynamic opacity to emphasize the maximum values; like DOPACITY but you can apply the style variables 'dopacitypow' and 'dopacitypow' to define custom opacity curves

emphasizes minimal and maximal values; the average values get more transparent

same as DOPACITYMINMAX

like DOPACITYMAX, but takes the logarithm of the values to scale the opacity

like DOPACITY, to use with DOMINANT, PERCERTOFMEAN or DEVIANT

make a composite chart of n BUBBLE, SQUARE, BAR or SYMBOL; this means a chart composed of a sequence of graphics of the defined type, positioned in a defined way relative to the center of the chart; see chart positioning below.
The number of sequenced charts is given by the number of fields defined; with SYMBOLS, the symbol types can be defined by the 'symbols' variable; default is 'circle'.

PIE or DONUT modifier; make radius variable by value;

make BAR, PIE or DONUT tree dimensional

with PIE or DONUT, the radius represents the value

with PIE or DONUT, the char height represents the value

with PIE or DONUT like SIZE; with POINTER, makes the pointer width more dynamic by value

with BAR or PIE; width and height represent the value; bars get cubes

the chart, or the single graphics of a composed chart are positioned on the center of the chart position.

the chart is aligned to the left of the chart position.

the chart is aligned to the right of the chart position.

the chart is aligned to the top of the chart position

the chart is aligned to the bottom of the chart position

like TOP

like BOTTOM

BARs and  MULTIPLE or SEQUENCE charts are composed horizontally; default is vertically
example: CHART|BAR|HORZ|UP|CENTER defines something like a pyramid, useful for demographics

the single graphics of a composed chart are positioned around the center of the chart position with the first graphic on the center and the following around the first with the radiuses touching each other.

the graphics are sorted by their values; default is sort down; if not defined, the graphics are drawn in the order of the field definition

sort up, the smallest value is on the top

sort down, the biggest value is on the top

sort the graphics by random; every chart gets its own 'composition', this is useful with STAR charts, to avoid pattern forming  

aggregate values of the same position before creating the charts; this is useful if you have a dataset with multiple records for the same position.
used with the style parameter 'gridwidth', you can aggregate every theme to a virtual grid, the position of a chart is mapped to the nearest point of the defined grid; the value(s) is/are added to the point.   

only with 'gridwidth': like AGGREGATE, but with a slightly different algorithm; every value is distributed to the nearest 4 points of the aggregation grid; every of the 4 points gets a portion of the value relative to the distance to the original position of the value.  

if you have a dataset with multiple records for the same position, this type modifier adds an offset to every repeated position, so you see every value displayed; normally the offset is added in Y-direction; you can change this by the modifier HORZ.

you can define rows by the style parameter 'gridx'; example: 'gridx':'3' means that every 3 offsets a new row will be started.

add a textual value display to CHOROPLETHE or CHART themes

create a colorized background for the textual value representation of CHART themes

create a background box around every chart; the box can be customized by the style parameter: 'boxopacity', 'boxborder' and 'boxmargin' described below.

makes charts movable; this means you can drag the charts on the map to any desired position.

a colorscheme is defined by an array of 1 - n values

the values may define directly 1 - n colors

Example:[ "red", "green", "blue" ]

defines the nature of the theme, for details see description of 'type' above

Example: [ "red","blue","green" ]

define the color, that will be displayed if there is no value for the item

define the line color of PIE or BAR charts

defines the overall opacity of a theme (CHLOROPLETHE and CHART)

if set to TRUE, the opacity of CHLOROPLETHE themes depends on the map actual zoom; zooming in the theme gets more and more transparent (to show details of the base map)

defines the opacity of surface filling in CHART themes

if set to TRUE, charts are displayed with a drop down shadow

define the aggregation algorithm: may be 'sum' or 'mean' (default is 'mean')

defines how selected items (points, lines, polygons) shall be marked  

define a filter for PERCENTOFMEAN

defines the 'type' of the overview chart, which is the sum or class chart shown in the theme legend; default: NONE  

defines the data source of the themes

defines the type of the data source of the themes, (csv, json, FT)

the URL to the data source

a Javascript function to call if data is loaded

the field (column name) where to take the value from, alternative to the definition in 'fields'

the  column/s of the data which cells define the relationship to the map; these can be:
a) an ID which corresponds to the IDs of map elements; in general the name of countries, towns, streets
b) a geographical position given in Latitude and Longitude in one or two data columns.

• in case of one column the contents of the cells must be two numbers: latitude,longitudeseparated by comma; example:  "lookupfield":"Position" and Position cell values like "44.234653,11.35647858"
• in case of two columns the first must define the latitude and the second the longitude; example: "lookupfield":"latcol|loncol" and latcol cells like  "44.234653" and loncol cells like "44.234653"

if TRUE, lookup cell values are changed toUpper before matching the corresponding ID on the map
example: the data may contain 'London', the map knows only 'LONDON'

if TRUE, the define suffix will be appended to all lookup cell values before matching the corresponding ID on the map

you may define map item IDs to exclude from the theme display; example; "exclude" : "Lichtenstein,Monaco"

define value ranges for themes with color classes defined by a colorscheme, you must define n+1 values for n colors

"style": {
  "type": "CHOROPLETHE|RANGES",
  "colorscheme": ["red","orange","yellow","green"],
  "ranges":"-100,-10,0,10,100"
}

in the above example there are 4 ranges with:

"red"	 from  -100 to <-10
"orange" from   -10 to <0
"yellow" from     0 to 10
"green"  from   >10 to 100

for EQUIDISTANT class distribution, you can here define the center of the classes; EQUIDISTANT automatic class definition takes the lowest and the highest value and divides the range into n equal parts. If you define a 'rangecentervalue' the range will be symmetric to this value; this means either  the min or the max value will be adjusted to fulfill this condition.

for EXACT theme types, you may want to define the allowed values or you can use this definition option to give an order to the possible EXACT values; note: EXACT values are strings. 

define the symbols for 'type' SYMBOL; this can be IDs of loaded symbols defined in SVG or generic symbol shapes created 'on the fly'. The generic symbols are: circle, square, diamond, triangle, label

The default symbol is 'circle'

define the alignment for CHART themes; possible values are: center, top, bottom, left, right, above, below; you can combine align values; example: "align" : "above|left" 

the name off the data column to use to size the charts

the size of BUFFER charts to draw around points, lines or areas (in meter)

the amount of buffer size changes (meters)

clips the charts drawn by defining a minimum value for the 'field100' values; useful if you want to make a theme with percentages to exclude values based on few items 

defines a scaling factor for values created with the FRACTION 'type' modifier

minimal value, values below this are not shown

you can define the value that will produce a chart of a normal size, which is 30 pixel

define a scaling factor (0 >x<100) to scale the chart size

the values from the theme data cells can be 'weighted' by a floating-point factor; here you can define n factors for n fields (data columns); example: "weights" : "1,1,0.5,1"  will scale the values of the 3. data column by 0.5

give a unit to the value display: example "units":"%" leads to value display like "56 %"

also the value100 (e.g. 100% value) can have a unit displayed

if you define a 'sizefield', you can give it a unit within the char info display; example "sizevalueunits" : "residents"  

you may define value units, only used within the theme legend 

for BAR charts with multiple bars, you can define a x-axis description; example you have 3 bars with values for 2012, 2013 and 2014, then yuo can define the x-axis text with: "xaxis" : "2012,2013,2014" 

define legend label, the value label in the theme legend display are preset with the column names you defined to get the data; here you can overwrite them with more readable or sigificant text: "label":"label1,label2,vabel3"

define the title of the theme, to show in the theme legend

define a short description to use in the theme legend and in chart info bubbles

define a description to use in the theme legend and in chart info bubbles

define a title for all chart info bubbles

the name off the data column to use as chart info title

the name off the data column to use as short description in the chart info

the name off the data column to use as chart label

show the original data of the chart within the chart info bubble

???

define an upper map scale value to suppress value display if you zoom out the map; e.g. "valueupper":"1:100000" shows values only if the map scale is lower than 1:100000

show bigger or smaller value texts

show values only if the dynamic text size (which depends on the chart size) is greater than the defined value (pixel) 

defines the power (x power n) of value display transparency depending on the value size; higher power leads to faster transparancy

defines the opacity of negative values ( 1 ... 0.1 )

the name off the data column to use to create CHOROPLETHE themes with dynamic opacity

the name off the data column to use with 'alphafield' to calculate the value for dynamic opacity;
special variable '$density' to define the density of the value in 'alphafield' as source for the dynamic opacity

defines a factor to apply to dynamic opacities calcolated by a dedicated value (see DOPACITY and alphafield)

defines the power (x power n) for the dynamic alpha calculation; it is comparable to the contrast for images (see DOPACITY and alphafield)

(deprecated) same as dopacitypow

the number of frames for CLIP themes

a text to display while CLIP themes are running

clip the number of parts of a theme

a x-axis grid width for MULTIPLE themes

with type modifier BOX: define the opacity of the chart background box

with type modifier BOX: define the margin (pixel) of the chart background box

with type modifier BOX: define the color of the border of the chart background box,
color defined like: '#123456', 'red', or RGB(128,234,255)

with type modifier BOX: define the border style of the chart background box;
possible styles are :'solid', 'dotted' or 'dashed'

with type modifier BOX: define the width (pixel) of the border of the background box

with type modifier BOX: define the corner radius (pixel) of the chart background box