Jacob,
the first thing I suggest you check is the scale of the map. I suspect that you might have a map at a scale that in real world terms means that segments are not much shorter than the radius you are choosing to select (eg 800m). The effect is that there may only be one or two other segments within 800m of each of these segments. Remember the measurement of metric distance is to the mid point of the segment. The shallowest segments you seem to be highlighting would be that because they are considered as only having one or two neighbours.
Alan
> On 19 Oct 2018, at 09:34, Jacob Dibble <[log in to unmask]> wrote:
>
> Dear All,
>
> I had sent this query to the QGIS toolkit forum and Jorge advised me to instead ask on the general forum:
>
> I have a question regarding Local Integration values on smaller radii. On low radii, on even higher (up to 800m) I am seeing in my particular case that the segments with the highest integration values are on the very very ends of the graph. The attached picture shows the 400m integration for segment analysis with metric radius type and only the top decile of highest values shown in red, with the base network underneath. For example one of the segments at the very edge of the graph has an integration value about 8 times higher than the next highest.
>
> I am looking for an explanation and some help to understand why some of the highest values are appearing at the ends of the graph, or in the middle of the arterial routes coming towards the city and even in the centre. These segments really only reach one or two segments within the 400m cutoff, so logically these should have very low integration, right?
>
> It would be nice to discuss perhaps why this is happening (both technically and perhaps from a perspective related to the urban structure) and also to know if there are any suggestions, workarounds, ways to redraw the graph, etc.
>
> Thanks in advance,
> Jacob Dibble
>
> <image.png>
>
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