[Qgis-us-user] Data plotting problem, bug?

[Patty Rehn]

Thanks for your input.
I agree. There is a rounding problem. I starting experimenting with your
approach and it worked in 3 out of 4 of my data sets. The last set
still has issues and keeps dropping my point but I think I will just edit
the legend separately since I cannot find a way to make it work otherwise.
I also learned that I have to save, close and reopen QGIS to make the
feature count work.
My problem data set had to be removed and reloaded to get my point to
return.
Again, thanks for helping.
Patty

On Wed, Jan 13, 2016 at 6:18 AM, Wilkes, Becky <bwilkes at email.unc.edu>
wrote:

> I have had problems with the classing algorithm in QGIS in the past.  I
> think the problem is that the classes overlap, and there is some kind of
> rounding error.  If you can manually change the breaks to something like
> this, it might help:
>
> 1     .44-.45
>
> 2     .46-.64
>
> 3     .65-.75
>
>
>
> Becky
>
>
>
>
>
> *Becky Wilkes, GISP*
>
> Cartography, spatial data vizualization
>
> MEASURE Evaluation <http://www.measureevaluation.org/>, a USAID-funded
> global health project
>
> CPC, University of North Carolina at Chapel Hill
>
>
>
> *Office*  919-445-9323 | *Cell*  919-604-1152 | *Skype*  wilkes.becky
>
> *Twitter*  @wilkes_becky <http://twitter.com/wilkes_becky>  |  *LinkedIn*
> wilkesbecky <http://www.linkedin.com/in/wilkesbecky>
>
>
>
>
>
> *From:* Qgis-us-user [mailto:qgis-us-user-bounces at lists.osgeo.org] *On
> Behalf Of *James Keener
> *Sent:* Tuesday, January 12, 2016 3:39 PM
> *To:* Patty Rehn <quicksilversystems at gmail.com>
> *Cc:* qgis-us-user at lists.osgeo.org
> *Subject:* Re: [Qgis-us-user] Data plotting problem, bug?
>
>
>
> Internal question: That's weird that the start and end values overlap.
> What are the rules for this when it's deriving them?
>
>
>
> Can you try making the groups not overlap? I'm curious if some code makes
> the ranges inclusive and others exclusive?
>
>
>
> Jim
>
>
>
> On Tue, Jan 12, 2016 at 3:36 PM, Patty Rehn <quicksilversystems at gmail.com>
> wrote:
>
> Hi everyone,
>
> Sorry if this is duplicate post, since I posted it to other places but got
> no response, so trying here too.
>
>
>
> For QGIS 2.10.1 Pisa, Win8
>
> I am attempting to plot my data (about 50 points, imported csv, converted
> to shape file);
>
>  as graduated by size, divided by natural breaks, 8 classes, link class
> boundaries, simple circle markers
>
>
>
> The problem is one point will not plot, unless the class is only that
> point (class 1):
>
>
>
> 1     .449872-.449872
>
> 2     .449872-.649973
>
> 3     .648873-.749909
>
> etc
>
> The point should plot with class 2 but does not.
>
> If I delete class 1, the point goes away.
>
> I have tried tweaking the class values such that the value should be
> included in
>
> class 2 also, but no difference.
>
> The circles are sized with the lowest values as the largest circles, if
> that matters.
>
>
>
> Additionally, sometimes the “show feature count” function gives the
>
> correct number of feature in the class but other times, it only lists
> zeros.
>
> Thank you for your suggestions.
>
> Patty
>
>
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