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# Servei SFDocuments.Chart

The Chart service provides a set of properties and methods to handle charts in Calc documents. With this service it is possible to:

- Access chart objects in Calc documents and manipulate their properties.

- Create and insert new charts into a Calc document.

- Exportar els diagrames com a fitxers d'imatge.

## Noms de diagrama

Charts may have two different names:

- An internal name given by LibreOffice as soon as the chart object is created (usually "Object 1", "Object 2" and so on).

- A user-defined name, which can be defined by right-clicking the chart and choosing Name in the context menu.

The Chart service primarily uses the user-defined name to access a chart object. If it does not exist, than the internal name is used.

## Invocació del servei

Abans d'utilitzar el servei Chart, cal carregar o importar la biblioteca ScriptForge:

• Per a carregar macros BASIC cal fer servir la biblioteca ScriptForge mitjançant aquesta expressió:
GlobalScope.BasicLibraries.loadLibrary("ScriptForge")
• Els scripts Python requereixen una importació del mòdul scriptforge:
from scriptforge import CreateScriptService

The Chart service is instantiated from a Calc service instance either using the Charts or CreateChart methods.

##### En Basic

The example below creates a Chart service instance from an existing chart in the current Calc document:

        GlobalScope.BasicLibraries.LoadLibrary("ScriptForge")
        Dim oDoc as Object, oChart as Object
        Set oDoc = CreateScriptService("Calc")
        Set oChart = oDoc.Charts("Sheet1", "Object 1")

The following example instantiate the Chart service by creating a new chart object based on the data contained in the range "Sheet1.A1:C10".

        Dim oDoc as Object, oChart as Object
        Set oDoc = CreateScriptService("Calc")
        Set oChart = oDoc.CreateChart("My Chart", "Sheet1", "Sheet1.A1:C10")

Read the CreateChart method description to learn more about its arguments.

##### En Python

The examples above can be written in Python as follows:

        from scriptforge import CreateScriptService
        doc = CreateScriptService("Calc")
        chart = doc.Charts("Sheet1", "Object 1")

        doc = CreateScriptService("Calc")
        chart = doc.CreateChart("My Chart", "Sheet1", "Sheet1.A1:C10")

## Propietats

Nom | Només de lectura | Tipus | Descripció
--- | --- | --- | ---
ChartType | No | String | Specifies the chart type as a string that can assume one of the following values: "Pie", "Bar", "Donut", "Column", "Area", "Line", "XY", "Bubble", "Net".
Deep | No | Boolean | When True indicates that the chart is three-dimensional and each series is arranged in the z-direction. When False series are arranged considering only two dimensions.
Dim3D | No | Boolean or String | Specifies if the chart is displayed with 3D elements. If the value is a string, it must be either "Bar", "Cylinder", "Cone" or "Pyramid". If the boolean True value is specified, then the chart is displayed using 3D bars.
Exploded | No | Numeric | Specifies how much pie segments are offset from the chart center as a percentage of the radius. Applicable to pie and donut charts only.
Filled | No | Boolean | When True, specifies a filled net chart. Applicable to net charts only.
Legend | No | Boolean | Specifies whether or not the chart has a legend.
Percent | No | Boolean | When True, chart series are stacked and each category sums up to 100%. Applicable to Area, Bar, Bubble, Column and Net charts.
Stacked | No | Boolean | When True, chart series are stacked. Applicable to Area, Bar, Bubble, Column and Net charts.
Title | No | String | Especifica el títol principal del diagrama.
XTitle | No | String | Especifica el títol de l'eix X.
YTitle | No | String | Especifica el títol de l'eix Y.
XChartObj | Sí | Objecte UNO | Returns the object representing the chart, which is an instance of the ScChartObj class.
XDiagram | Sí | Objecte UNO | Returns the com.sun.star.chart.XDiagram object representing the diagram of the chart.
XShape | Sí | Objecte UNO | Returns the com.sun.star.drawing.XShape object representing the shape of the chart.
XTableChart | Sí | Objecte UNO | Returns the com.sun.star.table.XTableChart object representing the data being displayed in the chart.

## Creació d'un diagrama

Consider the following data in the range "A1:B6" of a sheet named "Report".

| A | B
--- | --- | ---
1 | Sample A | Sample B
2 | 36 | 40
3 | 39 | 43
4 | 45 | 40
5 | 52 | 48

The examples below in Basic and Python show how to create a line chart from this data with legends.

##### En Basic

        oDoc = CreateScriptService("Calc")
        oChart = oDoc.CreateChart("Samples", "Report", "Report.A1:B6")
        oChart.ChartType = "Line"
        oChart.Legend = True
        oChart.Resize(1000, 1000, 25000, 15000)

##### En Python

        doc = CreateScriptService("Calc")
        chart = doc.CreateChart("Samples", "Report", "Report.A1:B6")
        chart.ChartType = "Line"
        chart.Legend = True
        chart.Resize(1000, 1000, 25000, 15000)

The chart does not need to be created in the same sheet where the data is located. It can be created in any existing sheet in the current file by specifying the sheet name in the second argument of the CreateChart method.

## Mètodes

Llista de mètodes del servei Chart
ExportToFile | Resize

## ExportToFile

Saves the chart as an image file in a specified location. Returns True if the image file could be successfully created.

### Sintaxi:

chart.ExportToFile(filename: str, imagetype: str = "png", overwrite: bool = False): bool

### Paràmetres:

filename: Identifies the path and file name where the image will be saved. It must follow the notation defined in SF_FileSystem.FileNaming.

imagetype: The name of the image type to be created. The following values are accepted: "gif", "jpeg", "png" (default), "svg" and "tiff".

overwrite: Specifies if the destination file can be overwritten (Default = False).

### Exemple:

##### En Basic

          oChart.ExportToFile("C:\Temp\myChart.svg", ImageType := "svg", Overwrite := True)

##### En Python

          chart.ExportToFile(r"C:\Temp\myChart.svg", imagetype="svg", overwrite=True)

## Resize

Changes the position of the chart in the current sheet and modifies its width and height. Returns True if resizing was successful.

### Sintaxi:

chart.Resize([xpos: int], [ypos: int], [width: int], [height: int]): bool

### Paràmetres:

xpos, ypos: Specify the new X and Y positions of the chart. If any of these values are omitted or if negative values are provided, the corresponding positions are left unchanged.

width: Specify the new width of the chart. If this argument is omitted or if a negative value is provided, the chart width is left unchanged.

height: Specify the new height of the chart. If this argument is omitted or if a negative value is provided, the chart height is left unchanged.

All arguments are provided as integer values that correspond to 1/100 of a millimeter.

### Exemple:

##### En Basic

          ' Changes only X and Y position
          oChart.Rezise(1000, 3000)
          ' Canvia només l'amplada i l'alçada del diagrama
          oChart.Resize(, , 25000, 12500)
          ' Keyword arguments are supported
          oChart.Resize(Width := 25000, Height := 12500)

##### En Python

          chart.Rezise(1000, 3000)
          chart.Resize(-1, -1, 20000, 20000)
          chart.Resize(width=25000, height=12500)

Totes les rutines o identificadors bàsics de ScriptForge que tenen el prefix de guió baix "_" estan reservats per a ús intern. No estan pensats per utilitzar-los en macros de Basic o scripts de Python.

Temes relacionats

Servei SFDocuments.Calc

Ens cal la vostra ajuda!