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https://issues.apache.org/jira/browse/SOLR-5405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15987146#comment-15987146
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Curtis Schneider edited comment on SOLR-5405 at 4/27/17 6:06 PM:
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Hello all,
I'm a Solr user with mild to moderate color blindness, both red-green and
blue-yellow. I can't trust my vision to make use of the Cloud Graph admin page
in Solr, I end up asking a co-worker to point out anything that isn't green or
using Chrome's Inspect Element tool to read the class names for each of the
nodes. @Nathan: I have not noticed anywhere else in the Admin UI that this is
a problem, for me.
A few notes:
The text for each of the nodes is very fine. There simply aren't enough pixels
for me to be able to determine what color is being displayed.
The color palette used is low in contrast. As a fallback I can sometimes use
contrast in shades when ability to discern color fails. I am unable to do this
with the color palette used for the Cloud Graph page.
What works for one color blind user may not work for another color blind user.
Depending on severity and type of color blindness, a color palette that works
for some may be of no benefit to others.
A potential solution:
Shapes
Color is a valuable tool to quickly display information to users but it doesn't
work for everyone. Adding a second dimension to the key would benefit all
users, not just the color blind. A common solution is to use shapes. Shape
representations for "Active", "Recovering", "Down", "Recovery Failed", and
"Gone" could be filled by Square, Diamond, Triangle, Circle, and "X". This
would still allow use of dark fill to identify Leaders.
Adding the text representation of the state after each node IP is another
option but may clutter the display in larger Solr clusters.
Nathan's initial suggestion of using a single letter to represent state sounds
awesome.
Thanks in advance for any time put toward a resolution,
Curtis
was (Author: schneidercurtis):
Hello all,
I'm a Solr user with mild to moderate color blindness, both red-green and
blue-yellow. I can't trust my vision to make use of the Cloud Graph admin page
in Solr, I end up asking a co-worker to point out anything that isn't green or
using Chrome's Inspect Element tool to read the class names for each of the
nodes. @Nathan: I have not noticed anywhere else in the Admin UI that this is
a problem, for me.
A few notes:
The text for each of the nodes is very fine. There simply aren't enough pixels
for me to be able to determine what color is being displayed.
The color palette used is low in contrast. As a fallback I can sometimes use
contrast in shades when ability to discern color fails. I am unable to do this
with the color palette used for the Cloud Graph page.
What works for one color blind user may not work for another color blind user.
Depending on severity and type of color blindness, a color palette that works
for some may be of no benefit to others.
A potential solution:
Shapes
Color is a valuable tool to quickly display information to users but it doesn't
work for everyone. Adding a second dimension to the key would benefit all
users, not just the color blind. A common solution is to use shapes. Shape
representations for "Active", "Recovering", "Down", "Recovery Failed", and
"Gone" could be filled by Square, Diamond, Triangle, Circle, and "X". This
would still allow use of dark fill to identify Leaders.
Adding the text representation of the state after each node IP is another
option but may clutter the display in larger Solr clusters.
Thanks in advance for any time put toward a resolution,
Curtis
> Cloud graph view not usable by color-blind users - request small tweak
> ----------------------------------------------------------------------
>
> Key: SOLR-5405
> URL: https://issues.apache.org/jira/browse/SOLR-5405
> Project: Solr
> Issue Type: Improvement
> Components: Admin UI
> Affects Versions: 4.5
> Reporter: Nathan Neulinger
> Assignee: Stefan Matheis (steffkes)
> Labels: accessibility
>
> Currently, the cloud view status is impossible to see easily on the graph
> screen if you are color blind. (On of my coworkers.)
> Would it be possible to put " (X)" after the IP of the node where X is
> [LARDFG] for the states?
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