I am trying to determine the color of borders set in an Excel document. I use the 'openpyxl' library (latest Version 3.0.9) and encountered a problem to extract the rgb color code when the user sets the border via the default 'auto' color.
When I extract the cell color property, I see this (in my debugger, see screenshot). None of the cell fields are set with an RGB code, the fields indicate some problem with extracting the color information. I assume this is due to the 'auto' color.
The index color probably refers to this in documentation:
Default Color Index as per 18.8.27 of ECMA Part 4
COLOR_INDEX = (
'00000000', '00FFFFFF', '00FF0000', '0000FF00', '000000FF', #0-4
'00FFFF00', '00FF00FF', '0000FFFF', '00000000', '00FFFFFF', #5-9
'00FF0000', '0000FF00', '000000FF', '00FFFF00', '00FF00FF', #10-14
'0000FFFF', '00800000', '00008000', '00000080', '00808000', #15-19
'00800080', '00008080', '00C0C0C0', '00808080', '009999FF', #20-24
'00993366', '00FFFFCC', '00CCFFFF', '00660066', '00FF8080', #25-29
'000066CC', '00CCCCFF', '00000080', '00FF00FF', '00FFFF00', #30-34
'0000FFFF', '00800080', '00800000', '00008080', '000000FF', #35-39
'0000CCFF', '00CCFFFF', '00CCFFCC', '00FFFF99', '0099CCFF', #40-44
'00FF99CC', '00CC99FF', '00FFCC99', '003366FF', '0033CCCC', #45-49
'0099CC00', '00FFCC00', '00FF9900', '00FF6600', '00666699', #50-54
'00969696', '00003366', '00339966', '00003300', '00333300', #55-59
'00993300', '00993366', '00333399', '00333333', #60-63
)
# indices 64 and 65 are reserved for the system foreground and background colours respectively
The documentation says that Index 64 is reserved so there is no point in trying to access the color array (max index is 63).
Source: https://openpyxl.readthedocs.io/en/stable/_modules/openpyxl/styles/colors.html
I can be brave and deal with index 64 as black, which seems to be the eternal auto-color anyway but I am wondering if there is a proper way to decode the 'auto' color from Excel?
System colours are set by the application. Windows defaults will be white background and black foreground. You can check the colors part of the styles.xml to see if these have been overriden, but really the client application gets to decide.
Related
I am using Altair for Python and my current code uses a redyellowblue color scheme which uses the middle color (yellow) accordingly to my domainMid parameter.
color=alt.Color('Spline_WW_Diff_Trend:Q', scale=alt.Scale(scheme='redyellowblue',reverse=True, domain=[-3.57,2.270], domainMid=0, clamp=True), legend=alt.Legend(title="Trend"))
Which gives me:
I need to replace the yellow color with the white color. I've switched scheme to range and tried different combinations of Scale parameters, but it doesn't respect my domainMid.
Example:
color=alt.Color('Spline_WW_Diff_Trend:Q', scale=alt.Scale(range=['#D4322C', 'white', '#4A74B4'],reverse=True, domain=[-3.57,2.270], domainMid=0, clamp=True), legend=alt.Legend(title="Trend"))
This gives me:
You can notice that the first column (which is all value 0) is showing reddish and not white (as it was supposed to be).
How can I have the same result as in the color scheme (picture one), but, with white instead of yellow?
Edit:
The same goes for.
range=['blue', 'lightblue', 'white', 'pink', 'red']
The mid color is light-blue, not white.
Edit 05/12/2022:
Just to clarify, I would like to achieve this same color scheme:
.
This heatmap was created in R, by using the RdYlBu color pallete (the one with 11 colors) and overwrite the middle (6th color) with white. Then, they increased the number of colors in the pallete to 99, to make the fade look more fluid. Does anyone has any idea on how to achieve that in Altair?
The easiest approach would be to set range='diverging', or to use one of the built-in diverging color schemes. For example:
import altair as alt
import pandas as pd
import numpy as np
df = pd.DataFrame({'x': np.arange(-10, 20)})
alt.Chart(df).mark_rect().encode(
x='x:O',
color=alt.Color('x:Q',
scale=alt.Scale(domainMid=0, scheme='redblue'))
)
If it's important to you that the center value is exactly white, you could use a condition to override the colormap for this value. For example:
alt.Chart(df).mark_rect().encode(
x='x:O',
color=alt.condition(
'datum.x == 0',
alt.value('white'),
alt.Color('x:Q', scale=alt.Scale(domainMid=0, scheme='redblue')))
)
I want to read ppt and highlight certain word(background color added if background color is not possible then change the font color) in the slide. I am able to do it at sentence level i.e. if that word is contain in paragraph then it will change the font color of whole text but i want to change the color of that word only.
How about the following for highlighting?
def set_highlight(run, color):
# get run properties
rPr = run._r.get_or_add_rPr()
# Create highlight element
hl = OxmlElement("a:highlight")
# Create specify RGB Colour element with color specified
srgbClr = OxmlElement("a:srgbClr")
setattr(srgbClr, "val", color)
# Add colour specification to highlight element
hl.append(srgbClr)
# Add highlight element to run properties
rPr.append(hl)
return run
It's hacking the XML but for highlighting (text background) that's what you have to do.
I'm trying to convert a list of hex codes to an sns.color_palette and then using it as a color palette for a bar plot -
plt.figure(figsize=(10,5))
colors = sns.color_palette(['#f15a22', '#9db1bb', '#f26b38', '#f47b4e', '#f58c64', '#f79c7a', '#bb1d8d', '#f8ad91',
'#00aeef', '#fbcebd', '#fcded3', '#feefe9', '#c23498', '#fbca8e'])
sns.barplot(organizations.index, organizations.values, color=colors)
But this keeps returning me an error -
ValueError: Invalid RGBA argument.
The hex codes work fine when I use them as sns.palplot(colors), and I've checked that the number of color codes are also equal to the number of bars (data rows) to be produced.
Can someone please tell me what I'm doing wrong?
My bad! It should be
palette = colors
When I add a cell to a table, I can manipulate its thickness (borderBottomSize), its color (borderBottomColor) but not its style (dashed, dotted, longdashed, ...).
When I read the code, the PhpOffice\PhpWord\Style\Cell extends the PhpOffice\PhpWord\Style\Border.
And the border class has the attribute borderBottomStyle.
But how to configure that?
I also looked into the PhpOffice\PhpWord\Style\Line, there I can find some "dashStyles", but none of them are working...
My question: How to change style of border (from strong line to for example dotted)?
You can define the style of the border by using the cell style property borderStyle. By default, it's set to solid, but you can use other values like dashed, dotted, double, etc. Sadly, this feature is not documented so I don't know all the available styles.
Don't forget to add a border size as well, otherwise no border will be rendered.
Example for a dotted cell:
$dottedCell = $tableRow->addCell($cellWidth, ['borderStyle' => 'dotted', 'borderSize' => 6]);
Title of this questions says everything. I only found out how to change the color of connectors. If I delete the color: option, they´re all grey. I tried to put in the field with stored colors in hex, with no result, stayed black.
In dataLabels.formatter you have access to this.point.color. So simple set useHTML: true for dataLabels, and create spans with specified colors.
the formatter function gives you a callback object, which has a color property that can be set with the color of your choice
formatter: (format) ->
format.color = #point.color