Question

我正在尝试使用for循环为xlsx文件中的图表添加序列，但出现一个奇怪的错误。

这是我的代码。

这部分显示我已经对DF进行了排序并重新索引，以便于将DF索引解释为excel索引，以供excel单元格参考。

# Sort dataframe and reindex
pivDF = pivDF.sort_values(by=['Vg'])
pivDF = pivDF.reset_index(drop=True) # reindex dropping previous index instead of adding it as a new column

# Add the following as a sheet in a excel file:
# data, chart
## Create workbook
workbook = xlsxwriter.Workbook(dirPath + file_name + '.xlsx') # Creates workbook object
## Add a worksheet to hold the data.
writer = pd.ExcelWriter(dirPath+"//"+file_name+".xlsx", engine = 'xlsxwriter')
pivDF.to_excel(writer,sheet_name = 'Data')
writer.save()
## Add plot 
### Create a new line chart.
chartsheet = workbook.add_chartsheet() # creates chartsheet objec
chart = workbook.add_chart({'type': 'line'}) # creates chart object

以下内容添加了该系列，也是我遇到问题的地方。

### Configure the chart
#### Configure series.
##### Get unique Vg
Vglist = pivDF.Vg.unique()
C1 = 'D'
C2 = 'F'
for Vg in Vglist:
    # Get min and max row excel index for current Vg
    indexList = list(pivDF.loc[(pivDF.Vg == Vglist[0])].index.values) # gets list of index at Vg value
    r1 = min(indexList) + 2
    r2 = max(indexList) + 2
    chart.add_series({
        'name':       'Vg ' + Vg + 'V',
        'categories': '=Sheet1!$'+ C1 +'$'+ r1 +':$'+ C1 +'$'+ r2, # Vd data
        'values':     '=Sheet1!$'+ C2 +'$'+ r1 +':$'+ C2 +'$'+ r2, # Id normalized data
    })

提前谢谢！

Answer 1

以编程方式设置XlsxWriter图表范围的最佳方法是避免使用Sheet1!D1:D12样式范围语法，而使用docs中所示的替代list语法。

类似的东西：

C1 = 3
C2 = 5
for Vg in Vglist:
    indexList = list(pivDF.loc[(pivDF.Vg == Vglist[0])].index.values)
    r1 = min(indexList) + 1
    r2 = max(indexList) + 1
    chart.add_series({
        'name':       'Vg %sV' % Vg,
        'categories': ['Sheet1', r1, C1, r2, C1],
        'values':     ['Sheet1', r1, C2, r2, C2],
    })

Answer 2

我在https://riptutorial.com/python/example/17392/create-excel-charts-with-xlsxwriter

找到了答案

代码应如下所示：

C1 = 'D'
C2 = 'F'
for Vg in Vglist:
    # Get min and max row excel index for current Vg
    indexList = list(pivDF.loc[(pivDF.Vg == Vglist[0])].index.values) # gets list of index at Vg value
    r1 = min(indexList) + 2
    r2 = max(indexList) + 2
    chart.add_series({
        'name':       'Vg %sV' % Vg,
        'categories': '=Sheet1!$%s$%s:$%s$%s' % (C1, r1, C1, r2), # Vd data
        'values':     '=Sheet1!$%s$%s:$%s$%s' % (C2, r1, C2, r2), # Id normalized data
    })

在xlsxwriter中的add_series中传递变量

2 个答案: