I have an Excel file with multiple sheets. With the data I retrieve from another Excel file, I want to add matplotlib charts to each sheet. However, although the plots are generated and shown in the console while the loop runs, once the loop is finished, all the sheets have the last chart added; the one that's supposed to be added to the last sheet.
I tried breaking down the loop and going manually, e.g., plot scheme for sheet[0], for sheet[1], etc. This gave the same result. I don't know if I'm doing something wrong or this is some sort of bug in openpyxl.
sheets = wb.sheetnames
for i in range(0, len(sheets)):
#Iterate over sheets
ws = wb[sheets[i]]
#The chart code
. . .
#I save the current plot to be added to the Excel sheet using openpyxl
fig1.savefig("myplot.png", dpi = 72)
#Add the saved chart to the active excel sheet, which is the current iteration in the loop
img = openpyxl.drawing.image.Image('myplot.png')
ws.add_image(img)
wb.save('Excel_file.xlsx')
At each iteration a new chart is supposed to be added to the active sheet. But I get the last chart in all of them at the end.
The Excel file with the charts added is supposed to be the final form of a fully automated report. I am not using openpyxl's charts instead of matplotlib because I need the flexibility and customizability of the latter.
Any help is appreciated. Many thanks.
Related
I have one excel file with 3 sheets, each sheet has a set of values within cell A1. How would I loop through the sheets and calculate the values?
I'm new to python and have been struggling to find a solution to this problem.
Thanks
Checkout this Code #3 where you can update sheet by looping sheet = wb.sheet_by_index(x) and retrieve the cell value sheet.cell_value(0, 0).
I have a program which takes DataFrame and writes it into excel as chart(using xlsxwriter and pandas libraries). For example, I wrote column-stacked-chart into excel.
What I want now is to add line chart to that excel chart which was created before. This isn't problem if I write them in the same function, but first chart is already created and I don't have that object in another code. I want to combine them, so I need to get list of charts in excel to take first one, create second and combine them.
I am using Openpyxl to write several tabs/sheets to an excel file. Why I chose Openpyxl over xlswriter is because I would like to load an existing workbook and create a bar chart using specific columns and rows.
The problem is the bar chart is positioned by default over the data and I would like to position it either below the data or to the right side of data.
Are there parameters that we can use to move the position of the container which holds the bar chart.
We can do this in xlswriter using x_offset and y_offset parameters while inserting the chart. Is there similar functionality with openpyxl.
Any help would be appreciated.
You can position the chart in a cell. For example, the following chart would be inserted in cell B5.
ws.add_chart(chart, "B5")
The top left of the chart is now anchored to B5. You can change the anchor parameter to another cell reference.
How does one manipulate the format of the excel sheet using python?
My code currently is taking data from several spreadsheets and is pulling the data I want from these sheets into a single workbook. I want the formatting of the workbook to be consistent, because every iteration of the code just saves over the previously made one.
example I want the Cell A1 to be extended and background of the cell to be blue, but I need A2 background to be red
I am working in python and using xlwt.
I have got a sample excel sheet and have to generate same excel sheet from python. Now the problem is heading columns are highlighted using some color from excel color palette and I am not able to find the name of color. I need to generate exact copy of sample given to me.
Is there any function in xlwt which let me read color of cell of one sheet and then put that color in my sheet?
Best you read the colours from the sample given to you with xlrd.
If there are only a few different colours and they stay the same over time, you can also open the file in Excel and use a colour picker tool to get the RGB values of the relevant cells.