一:属性相关: Series选项:
(1)Format页(数据柱的风格)
在Color Each中打勾,就可使用多种颜色显示, color按钮用于设置颜色, Style用于设置图表的风格(Rectangle长方体,Pyramid三角体,Invert.PyramId倒三角体,Cylinder圆柱体,Ellipse圆形,Arrow箭头,
(2)Marks页(标记,数据内容显示设置)
数据内容显示设置:在Style中选相关的选项,标记的类型:Value值、Percent百分率、Label字段内容、Label and Percet字段内容+百分率、Label and Value 字段内容+值、Legend与右上角的数据说明一样、Percent Total百分率+值、Label&Percent Total字段内容+百分率+值。
二:数据库绑定 1、绑定数据
ADOQuery1.Active := True;
DBChart1.Series[0].DataSource := ADOQuery1;
DBChart1.Series[0].XLabelSource := ‘FieldName’;
DBChart1.Series[0].YValues.ValueSource := ‘FieldName’;
2、切换图表类型
tmpChart := DBChart1.Series[0];
ChangeSeriesType(tmp, TLineSeries);
tmpChart.Active := true;
tmpChart.RefreshSeries;
3、设置分页
DBChart1.ScaleLastPage := true;
DBChart1.MaxPointsPerPage := 10;
DBChart1.Page := 1;
DBChart1.PreviousPage;
DBChart1.NextPage;
DBChart1.Page := NumPages;
4.导出图表 SaveToBitmapFile(FileName);
5.打印图表 uses TeePrevi; ChartPreview(Parent,DBChart1); TeePreview(Parent,DBChart1);
6.数据源 ADODataSet1.CreateDataSet; AdoDataSet1.Insert; AdoDataSet1.FieldByName('Value').AsFloat:=200000; AdoDataSet1.FieldByName('Info').AsString:='05-02'; AdoDataSet1.Post;
三:实例
①:我用的是FASTLINE,里面需要动态的绑定x,y轴,在DBCHART中可以直接设置,那么在程序中如何设置呢?
sSql := 'select scan_start_time,sum'+'('+trim(adoQtarget.FieldByName('name').Value)+')'+' as c1'; sSql := sSql + ' from pm_radio '; sSql := sSql + ' where scan_start_time >='+#39+ FormatDateTime('YYYY-MM-DD HH:00:00',wwDBDateTimePicker1.DateTime)+#39; sSql := sSql + ' and scan_start_time <='+#39+ FormatDateTime('YYYY-MM-DD 23:00:00',wwDBDateTimePicker1.DateTime)+#39; sSql := sSql + ' group by scan_start_time'; adoQChart.Close; adoQChart.SQL.Clear; adoQChart.SQL.Text :=sSql; adoQChart.Open; Series1.XValues.ValueSource := 'scan_start_time';//adoQchart.FieldByName('scan_start_time').AsString; series1.YValues.ValueSource := 'c1';//adoQchart.FieldValues['c1'];//.fieldbyname('c1').AsString;
②:
uses Series,TeeEdiGene;
private Series1: TPieSeries;
procedure TnPOP_check_model.insertcurrve_model_tot; var curve_today_tot:array [0..30] of string; begin Series1:=TPieSeries.Create(dbchart1); Series1.ParentChart:= dbChart1; Series1.Clear; Series1.Marks.Visible:=true; Series1.Marks.Style:=smsValue; Series1.SeriesColor:=cxcolorcombobox1.ColorValue; Series1.Title:='SUM_'+'-'+'Q';
qry_temp1.Close; qry_temp1.SQL.Text:='select type,bad_count from press_check2'; qry_temp1.Open; if qry_temp1.RecordCount>0 then begin if length(trim(qry_temp1.fieldbyname('bad_count').AsString))=0 then curve_today_tot[i-1]:='0' else Series1.DataSource:= qry_temp1; Series1.xlabelsSource:='type'; Series1.YValues.valuesource:='bad_count'; Series1.Active:=True; end;
cxcombobox1.Properties.Items.Add(trim(series1.Title)); end;
转自: http://blog.csdn.net/chelen_jak/article/details/7363877
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