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An original point of view

GIS

Quick transfer the QGIS legend from print layout to Excel

QGIS print layout retrieved in Excel

Pic. 10 Our QGIS print layout legend retrieved accurrately in Excel.

Maybe you were wondering about the possibility of transferring the legend from the QGIS print layout to Excel? This short text shows you how to do it, especially for the simple legend, which won’t last long. The tutorial is oriented toward not programming-savvy people, therefore please don’t expect any kind of automatization here. Of course, there are methods, which could allow you to render the legend accurately from the QGIS print layout, but I won’t focus on them. The sample solutions can be found here.  My text explains a nice workaround by using a third-party tool, which usability will depend on the legend circumstances in our print layout. My work, in fact, will play around with the most simple examples.

QGIS print layout legend

Pic. 1 The example of the default legend produced in the QGIS print layout after sanitization of legend items.

I assume, that you have already sanitized your legend and keep only the items you need on your map. It can be done by unticking “Auto update” box and removing unwanted inputs by selecting them and clicking the red minus symbol (Pic. 1).

If you did so, then we can start transferring our legend item into Excel. The first example will be very simple. I will consider just a 1-column legend without any groups headings.

QGIS print layout legend simple

Pic. 2 The simple legend pattern in the QGIS print layout is being adjusted by the highlighted properties.

Any legend might require some quick alterations. In the case of planned usage of the easiest pattern of this legend in the Excel we should make the following steps:
– set column counts as 1,
– set the proper spacing between the legend title, group & subgroup headings, and legend items. The total spacing must be adjusted to your page size. The legend object cannot exceed the page bounds. On the other hand, when the spaces between the  single elements are too small, they might be congested in the Excel worksheet cells later,
– position of the legend doesn’t matter in this case the same as the arrangement of symbols.

This is all, we can do in QGIS. Our next step is saving the legend as the .pdf file with keeping all the saving options as default (Pic. 3).

QGIS print layout export as PDF

Pic. 3 Exporting our legend as the .pdf file.

Our next step must be using the third-party tool, which is the file converter. There is a multitude of open-source tools available on the web, although not each of them provides correct conversion in our point of view. Basically, most of them are fine unless we deal with various tables, images, symbols, and so forth. The best one I’ve managed to find for the following exercise is pdf2go.com.
After successful conversion of your file, the legend in Excel should look as below:

QGIS print layout legend in Excel

Pic. 4 QGIS print layout legend in Excel.

where the first column is very wide. We don’t need a width like this, so it can be reduced from 111 to 40 when right-clicking and selecting “Column width”. This parameter can be set both for columns A and B (Pic. 5). However, doing it just for column A will still be enough. The major problem here is the location of both symbols and their descriptions in the same cell. You probably would like to have them separated. That’s why 2 columns must be used here.

Excel changing column width

Pic. 5 Changing the width of the first two columns in Excel.

Next, we can replicate the content from column A to column B (Pic. 6). When you haven’t changed the column B width earlier, now it should go automatically with the standard pasting of your data (Pic. 6).

QGIS legend in Excel duplicated

Pic. 6 Duplicated QGIS legend content in Excel.

Why is this duplication for? We will store symbols in one column and their descriptions in another one.

Now, from column A we can clear text by choosing the “Clear contents” option after the right-click on selected column A (Pic. 7).

QGIS legend Excel clear contents

Pic. 7 Clearing text in column A.

In column B we need to delete the shapes. It’s not unfortunately the thing, which could be done just in Excel, so we should use the piece of VBA code for this purpose. The code can look like this:

Sub RemoveObjects()
Dim Sh As Shape
Dim ws As Worksheet
Dim LastRow As Long
Set ws = ActiveSheet
LastRow = ws.Cells(ws.Rows.Count, "B").End(xlUp).Row
With ws
For Each Sh In .Shapes
If Not Application.Intersect(Sh.TopLeftCell, .Range("B1:B" & LastRow)) Is Nothing Then
Sh.Delete
End If
Next Sh
End With
End Sub

and it should erase all objects which fall inside the B-column bounds down to the last row.

Excel clearing objects in range

Pic. 8 Clearing objects in our range in Excel.

The code works regardless of the sheet name, which after the conversion is called “Table 1” instead of the default “Worksheet1”.
Another step we should do is the adjustment of the remaining objects on our left in column A. Their position is uncomfortable, as they are placed just nearby the column edge.
In this case, in our Home section, we should drop down the “Find & Select” panel and choose the “Go to Special” option, where we pick up the “Objects”. After clicking OK we can see all our objects selected, thereby they became movable in one piece, what exactly we need! (Pic. 9).

Excel Go to Special - Objects

9. Selection of all the objects in our Excel worksheet.

After adjusting the final position of the object’s row, we can reduce the width of column A and merge row 1 with the “LEGEND” title. Our legend is done! (Pic. 10).

QGIS print layout retrieved in Excel

Pic. 10 Our QGIS print layout legend is retrieved accurately in Excel.

Now is the time for a bit more complicated example, which will include the group and subgroup headers.

QGIS print layout legend item properties

Pic. 11 Hiding or unhiding group/subgroup headers in the QGIS print layout legend.

There is an option in our print layout legend item properties, where we can define the visibility of group or subgroup headers (Pic. 11, 12).

QGIS print layout legend item properties2

Pic. 12 Legend including the headers of subgroups of items.

When applied, they appear somewhere in the center of our legend width and between the particular item groups, which are divided by them. The situation becomes complicated in Excel, where unlike previously everything was falling in a separate cell, now the subgroup headers appear in the same cell where is placed just after the line break. In turn, the default row height disrupts the alignment of some of the objects (Pic. 13).

QGIS legend with subgroup headings Excel line break

Pic. 13 The QGIS print layout legend including the headings of subgroups as transferred to Excel. Headings appear in the sale cell after line break.

In order to fix this affliction, we should use the “Text to columns” option and pull these headings over from the items descriptions row. First, make sure that all your columns are unmerged. Sometimes the conversion tool throws merged columns in the rows including the subgroup headers (Pic. 13).

Excel text to columns line break

Pic. 14 Sanitizing our QGIS print layout legend in Excel by moving the subgroups headings outside of the major legend content.

Next, we should follow the image above (Pic. 14), where our criterion will be simply the break expressed by the Ctrl + J shortcut. The result is immediately visible in our insight section beneath. Moreover, in the box, you should see some blinking dot meaning that everything is fine. After validating this way, we should have the headings on the following column. Unfortunately, this method doesn’t transfer the font formatting, so it must be done separately.
The remaining parts of this exercise are manual work, however, it can be done quickly. It includes:
– insertion of new rows where the subgroup headings are to be placed
– alignment of some objects
– using format painter in order to retrieve the initial font transferred from QGIS
– bulk adjusting the row height (optionally).

Anyhow, the final version should look pretty much as per below:

QGIS print layout retrieved in Excel2

Pic. 15 Our QGIS print layout legend is retrieved accurately in Excel which includes the subgroups titles.

As you can see the process of transferring the legend from QGIS print layout to Excel is doable, although valid just for simple examples. More complicated cases definitely require programming skills, especially Python, which is widely used in QGIS.

Mariusz Krukar

 

Links:

  1. https://docs.qgis.org/3.22/en/docs/user_manual/print_composer/composer_items/composer_legend.html
  2. https://www.pdf2go.com/pdf-to-excel
  3. https://www.extendoffice.com/documents/excel/714-excel-delete-all-auto-shapes.html
  4. https://www.automateexcel.com/how-to/text-to-columns-line-break/

 

Forums:

  1. https://www.mrexcel.com/board/threads/how-to-delete-objects-in-specific-range.366121/
  2. https://forum.ozgrid.com/forum/index.php?thread/1228094-delete-shapes-in-specific-column/
  3. https://www.mrexcel.com/board/threads/excel-vba-delete-shapes-in-a-range.81462/

My questions:

  1. https://gis.stackexchange.com/questions/422201/qgis-print-layout-export-legend-items-to-excel
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