[Therion] Altitude colors range

[Footleg]

Now I have added this into my surveys, I see that the centreline is
rendered as solid lines when you include the centreline (and have not
set the centreline symbol group to be hidden), but if you do not
include the centreline then the survey lines renderer in the scraps
are just dashes at each station rather than complete lines running the
complete distance between pairs of stations. Not a problem, but
curious as to why I get two different styles for cave survey lines.

Then I tried this on my 66km system survey and with centrelines set to
show in my layout, I found metapost used up all the words of memory it
is allowed so I get no output. From my logfile:

Here is how much of MetaPost's memory you used:
 6498 strings out of 6522
 15689 string characters out of 34452
 1500001 words of memory out of 1500000
 1389 symbolic tokens out of 16384
 12i,75n,41p,489b,3f stack positions out of 300i,84n,5000p,608b,15f
 10510 string compactions (moved 140463121 characters, 13446441
strings)371 output files written: data.1 .. data.4017

How can I get around this limitation?

Footleg

On 8 January 2015 at 10:28, Footleg <drfootleg at gmail.com> wrote:
> I see it too now. I have not realised you could include just a
> centreline in the map. It shows every survey station and leg in the
> cave, rather than just those included in scraps right? When I add that
> my altitude baseline is set to 0m like yours using 5.3.16
>
> I've not done this before as I had assumed I could only see survey
> sections which were drawn in scraps. I can see how it is useful to be
> able to render centrelines and stations for the entire system
> regardless.
>
> Footleg
>
> On 7 January 2015 at 18:41, Bruce <bruce at tomo.co.nz> wrote:
>>>Or maybe I am not understanding what you mean by including the centreline
>>> in the map
>>
>>
>>
>> Like this
>>
>> map DeckExtensionPlanMap -title "The Deck Extension<br>Upper
>> Levels<br>Middle Earth Cave<br>Greenlink System"
>>
>>  …
>>
>>              36-BigWednesdayPlan at MiddleEarth
>>
>>  36-BigWednesdayPlanCL at MiddleEarth
>>
>> …
>>
>> end map
>>
>>
>>
>> where the contributory maps look like this…
>>
>>
>>
>> map 36-BigWednesdayPlanCL -title "36-BigWednesday centreline Plan"
>> -projection plan
>>
>>   36 #centreline survey
>>
>> endmap
>>
>>
>>
>> map 36-BigWednesdayPlan -title "36-BigWednesday Plan" -projection plan
>>
>>   36-BigWednesdayPlan-s1 #scraps
>>
>>   36-BigWednesdayPlan-s2
>>
>> endmap
>>
>>
>>
>> So what it is looking like, if the contributory maps are all derived from
>> scraps (or maps in turn derived from scraps), then the altitude range is
>> correct.
>>
>> But if there is a map that is centerline derived (ie has no scraps) then the
>> altitude minima is set to zero.
>>
>>
>>
>> One other thing.
>>
>> All my tests so far use survex for loop closure.  I have not tried using
>> Therion loop closure.
>>
>> And all my files are native Therion files – no survex imports.
>>
>>
>>
>> Bruce
>>
>>
>>
>> ________________________________
>>
>> From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
>> Of Marco Menchise
>> Sent: Thursday, 8 January 2015 3:05 a.m.
>> To: List for Therion users
>> Subject: Re: [Therion] Altitude colors range
>>
>>
>>
>> I checked and I can confirm what Bruce is saying. If you don't include
>> centerline in map, the altitude range is correct.
>>
>>
>>
>> If you hide the centerline in the layout (leaving it in the map) the
>> altitude range keeps starting from 0 m.
>>
>>
>>
>> Marco
>>
>>
>>
>>
>>
>> On Wed, Jan 7, 2015 at 2:52 PM, Footleg <drfootleg at gmail.com> wrote:
>>
>> I am not seeing this Bruce. I just tested with 5.3.16. My survey imports the
>> centreline from a Survex .3d file however, so that might make a difference?
>> Or maybe I am not understanding what you mean by including the centreline in
>> the map. I turned off the centreline using 'symbol-hide line survey'. If I
>> comment that out in my layout then the centreline is drawn in the map, but
>> my altitude range still covers only the range of my scraps.
>>
>>
>>
>> Footleg
>>
>>
>>
>> On 5 January 2015 at 22:40, Bruce <bruce at tomo.co.nz> wrote:
>>
>> OK, the problem is not the previews or the offsets, as it occurs in the map
>> examples below regardless of presence of previews or offsets.
>>
>> What does seem to control whether the altitudes start at zero meters is
>> whether the map definition includes a survey centerline.
>>
>> If part of map definition includes a survey centerline, then altitudes are
>> coloured from zero meters to survey maxima (a bug?).
>>
>> If map definition has no survey centerline as part of it’s definition, then
>> coloured from survey minima to survey maxima (correct behaviour).
>>
>> Hence I find this behaviour manifests in maps in progress, but when they are
>> finished and I (usually) turn off the centerline maps, they correct
>> themselves.
>>
>>  Bruce
>>
>>
>>
>>
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