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Thank you so much Petros

On Sat, Nov 24, 2018 at 4:47 PM Koutsolampros, Petros <
[log in to unmask]> wrote:

> Hi Mona,
>
> I assume you're talking about the latest released version 0.6.0 and
> importing a DXF. depthmapX can not handle curves so they are converted into
> lines. If your curves are arcs then depthmap should break them into 36
> lines each. If your curves are splines then depthmap will just connect the
> control points of each spline with lines.
>
> If you have splines and need a more accurate representation its better if
> you somehow break it into lines in your CAD application and then import it.
>
> Cheers,
> Petros
>
> On 24/11/2018 11:20, Mona Tarashi wrote:
>
> hello
> I have another question
> I imported a plan with some curves into depth map. those curves appear
> like a direct line in the depth map, I want them to be like arcs,
> what is the problem? do you know any solution?
>
> On Fri, Oct 19, 2018 at 5:12 PM Mona Tarashi <[log in to unmask]> wrote:
>
>> Thank you Kerstin
>>
>> On Friday, October 19, 2018, Kerstin Sailer <[log in to unmask]> wrote:
>>
>>> Hi Mona,
>>>
>>> Just to follow up Alan's suggestion, I've written a blog post some years
>>> ago highlighting that very point. You might find this useful:
>>> https://spaceandorganisation.org/2015/03/13/seeing-is-not-interacting-thoughts-on-the-new-learning-hub-by-heatherwick-studio/
>>>
>>> As Daniel suggests, there is of course a lot of research published,
>>> particularly in the analysis of museums, so do take a look at that
>>> literature too (google scholar is your friend here!)
>>>
>>> Best,
>>>
>>> Kerstin
>>>
>>>
>>>
>>>
>>> On 19/10/2018 13:37, Penn, Alan wrote:
>>>
>>>> Mona,
>>>>
>>>> the simplest advice is that if you can think of two ways of doing an
>>>> analysis you do both and compare the results. For example, the void cannot
>>>> be walked across so treat it as a block for permeability, but it can be
>>>> seen across so treat it as open space for visibility. The difference
>>>> between these two analyses will tell you something about how the building
>>>> works.
>>>>
>>>> Alan
>>>>
>>>> On 19 Oct 2018, at 12:59, Mona Tarashi <[log in to unmask]> wrote:
>>>>>
>>>>> Dear friends
>>>>> Hello
>>>>>
>>>>> I have a problem in performing an analysis. we have void in a plan.
>>>>> so we can see the first floor from the second floor, but we have no
>>>>> direct access. ( just from staircases)
>>>>> i want to perform axial analysis and VGA analysis, but i am not sure
>>>>> it is correct not to consider void areas.
>>>>> do you have any comments? or any similar project which i can see the
>>>>> process?
>>>>>
>>>>> Thanks in advance
>>>>>
>>>>>
>>>>> On Fri, Oct 19, 2018 at 3:17 PM Jacob Dibble <[log in to unmask]>
>>>>> wrote:
>>>>> Dear Kimon, Daniel, and Alan,
>>>>>
>>>>> Thank you all for the quick and thorough responses!! I am actually
>>>>> going to hold off on any further responses to you because I want to look
>>>>> more carefully at your answers, run a few different test, and revisit the
>>>>> formulas used of course in conjunction with what you have said. Also, Kimon
>>>>> I want to check out your publication and Daniel I would like to check out
>>>>> the reference you sent me as well.
>>>>>
>>>>> I will come back when I have a chance to look more calmly at your very
>>>>> thorough responses and go from there!
>>>>>
>>>>> Thanks again and hope everyone has a nice weekend,
>>>>> Jacob
>>>>>
>>>>> --
>>>>> Dr. Jacob Leonard Dibble
>>>>>
>>>>> www.jacobdibble.com
>>>>>
>>>>> [log in to unmask]
>>>>> +358 (0) 45 7877 9956
>>>>>
>>>>>
>>>>> On Fri, Oct 19, 2018 at 12:42 PM Krenz, Kimon-Vincent <
>>>>> [log in to unmask]> wrote:
>>>>> Dear Jacob,
>>>>>
>>>>> I assume your are running an angular segment analysis with metric
>>>>> radius for integration and are using a road centre line map as your base?.
>>>>>
>>>>> I have discussed this issue a while ago with Petros Koutsolampros. The
>>>>> conclusion is that these outliers are caused by three factors:
>>>>>
>>>>> a) the length of the segment,
>>>>> b) the fact that segments are leaf segments (at the end or near the
>>>>> end of a graph), and
>>>>> c) the use of a tulip analysis (which divides the angular difference
>>>>> into tulip bins).
>>>>>
>>>>> This means the analysis only reaches the segment only once and this
>>>>> leads to high square values. Petros wrote a simple example based on an
>>>>> analysis back then, which I will copy below:
>>>>>
>>>>> Taking the example of the outlier Ref: 6001. That segment is only
>>>>> connected to one other segment (Ref: 5999) and because you limit by metric
>>>>> radius 1200, you only capture that for the analysis from 6001. You can see
>>>>> this if you do metric-step-depth: only 5999 is less than 1200.
>>>>>
>>>>> The actual angle between the two segments is 178.44057 degrees but
>>>>> since you're using tulip analysis with 1024 bins this falls within the 4th
>>>>> bin (1st bin is at 180 if I understand correctly), making thus their
>>>>> angular distance = bin/(tulips / 4) = 1/64 (0.015625). Again you can see
>>>>> this with angular step depth from 6001: 5999 has that value.
>>>>>
>>>>> As there's only one other segment, this is also the final total depth
>>>>> from 6001
>>>>>
>>>>> The final integration calculation is nodes*nodes/totalDepth =
>>>>> 2*2/(1/64) = 256 (the two nodes are 6001 and 5999)
>>>>>
>>>>> As one can see, this is an expected outcome, at least from a
>>>>> computational point of view.
>>>>>
>>>>> You might, nevertheless, want to remove these outliers from your map.
>>>>> If so, you could have a look at the appendix (page 74.23) of my SSS12 paper
>>>>> 'regional morphology', where I describe a method to identify these outlier
>>>>> by dividing through the log of integration by the log total depth:
>>>>>
>>>>> CCTD_r = Log(CC_r+3)/Log(TD_r+3)
>>>>>
>>>>>
>>>>> https://www.researchgate.net/publication/322255338_Regional_Morphology_The_Emergence_of_Spatial_Scales_in_Urban_Regions
>>>>>
>>>>> Best,
>>>>> Kimon
>>>>>
>>>>>
>>>>> Dr Kimon Krenz
>>>>> FHEA
>>>>>
>>>>> mail.       [log in to unmask]
>>>>> phone.    0044 7784 329089
>>>>> web.       www.kimonkrenz.com
>>>>>
>>>>> The Bartlett School of Architecture
>>>>> Faculty of the Built Environment
>>>>> University College London UCL
>>>>> 22 Gordon Street
>>>>> London WC1H 0QB
>>>>>
>>>>>
>>>>>
>>>>> 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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>>>>>>
>>>>>>
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>>>>>
>>>>>
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>>>>>
>>>>>
>>>>> --
>>>>> Mona Tarashi.
>>>>> Master of urban design
>>>>> Tehran Art University
>>>>>
>>>>> To unsubscribe from the SPACESYNTAX list, click the following link:
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>>>>>
>>>>>
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>>>>
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>>>
>>> --
>>> Dr Kerstin Sailer
>>> Reader in Social and Spatial Networks
>>>
>>> Space Syntax Laboratory
>>> The Bartlett School of Architecture
>>> University College London (UCL)
>>> 22 Gordon Street
>>> London  WC1H 0QB  UK
>>>
>>> T: +44 (0) 20 3108 9031
>>> E: [log in to unmask]
>>> W: www.ucl.ac.uk/bartlett/architecture/research/space-syntax-laboratory/
>>> W: www.ucl.ac.uk/bartlett/architecture/dr-kerstin-sailer
>>> W: www.spaceandorganisation.org
>>> T: www.twitter.com/kerstinsailer
>>>
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>>
>>
>> --
>> Mona Tarashi.
>> Master of urban design
>> Tehran Art University
>>
>>
>
> --
> Mona Tarashi.
> Master of urban design
> Tehran Art University
>
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-- 
Mona Tarashi.
Master of urban design
Tehran Art University

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