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x/y distances between explicit data and survey points
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@ -158,9 +158,11 @@ class Cave(TroggleModel):
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for e in CaveAndEntrance.objects.filter(cave=self):
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if e.entrance.best_station() and e.entrance.best_station() != "":
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#print(self, e, e.entrance.best_station())
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if e.entrance.best_station_object().x:
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# print(f"{self} {e.entrance.best_station_object()} {e.entrance.best_station_object().x}")
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try:
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x = e.entrance.best_station_object().x
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no_data = False
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except:
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pass
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return no_data
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def singleentrance(self):
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@ -58,6 +58,7 @@ class SurvexStation(models.Model):
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x = models.FloatField(blank=True, null=True)
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y = models.FloatField(blank=True, null=True)
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z = models.FloatField(blank=True, null=True)
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entrance = models.ForeignKey("Entrance", blank=True, null=True, on_delete=models.SET_NULL)
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class Meta:
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ordering = ("id",)
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@ -1,4 +1,5 @@
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from collections import OrderedDict
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from math import sqrt
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from pathlib import Path
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from django.shortcuts import render
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@ -276,15 +277,10 @@ def dataissues(request):
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def eastings(request):
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"""report each Northing/Easting pair wherever recorded"""
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ents = []
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entrances = Entrance.objects.all()
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for e in entrances:
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if e.easting or e.northing:
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ents.append(e)
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if e.lat_wgs84 or e.long_wgs84:
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ents.append(e)
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ents = set()
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gpsents = set()
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for e in ents:
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def add_stations(e):
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try:
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ts = e.tag_station
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if ts:
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@ -307,9 +303,38 @@ def eastings(request):
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e.tag_os = None
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# print(f"exception for {e}")
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stations = SurvexStation.objects.all()
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entrances = Entrance.objects.all()
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for e in entrances:
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if e.easting or e.northing:
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ents.add(e)
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add_stations(e)
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e.northing = float(e.northing)
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e.easting = float(e.easting)
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return render(request, "eastings.html", {"ents": ents, "stations": stations})
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if e.northing < 5200000:
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e.bmn = True
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# e.northing = e.northing + 5200000
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e.northing = e.northing + 5198919.918
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#e.easting = e.easting - 36000 + 486000
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e.easting = e.easting + 374854.63 # linear hack
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try:
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e.diffx = e.easting - e.best_station_object().x
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e.diffy = e.northing - e.best_station_object().y
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e.error = sqrt(e.diffx**2 + e.diffy**2)
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except:
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pass
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for e in entrances:
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if e.lat_wgs84 or e.long_wgs84:
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gpsents.add(e)
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add_stations(e)
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stations = SurvexStation.objects.all() # NB these are NOT all the stations in troggle_import_root.pos
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return render(request, "eastings.html", {"ents": ents, "gpsents": gpsents, "stations": stations})
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def aliases(request, year):
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@ -34,7 +34,7 @@ class MapLocations(object):
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We don't need these map locations any more ?!
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They would only be used in addition to entrances going onto a map display"""
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p = [
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fp = [
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("laser.0_7", "BNase", "Reference", "Bräuning Nase laser point"),
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("226-96", "BZkn", "Reference", "Bräuning Zinken trig point"),
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("vd1", "VD1", "Reference", "VD1 survey point"),
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@ -49,12 +49,14 @@ class MapLocations(object):
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("225-96", "BAlm", "Reference", "Bräuning Alm trig point"),
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] # 12 fixed points
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p = []
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def points(self):
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prior = len(self.p)
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for ent in Entrance.objects.all():
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for st, ent_type in {ent.exact_station: "exact", ent.other_station: "other", ent.tag_station: "tag"}.items():
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if st != "":
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self.p.append((st, str(ent), ent.needs_surface_work(), str(ent)))
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self.p.append((st, str(ent), ent.needs_surface_work(), ent))
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store_data_issues()
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found = len(self.p) - prior
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message = f" - {found} Entrance tags found - not yet validated against survex .pos file."
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@ -70,9 +72,10 @@ def validate_entrance_stations(ent=None):
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"""
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bads = 0
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good = 0
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url="/caves" # fallback
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def tag_lower_case(station):
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nonlocal url
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so = SurvexStation.objects.filter(name=station.lower())
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if so.count() == 1:
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message = f"X - Entrance {ent} station '{station}' should be '{station.lower()}'"
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@ -104,6 +107,13 @@ def validate_entrance_stations(ent=None):
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continue
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try:
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so = SurvexStation.objects.filter(name=st)
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except:
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message = f" ! - Entrance {ent} has invalid '{ent_type}' station '{st}'. EXCEPTION."
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stash_data_issue(parser="positions", message=message, url=url)
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print(message)
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bads +=1
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continue
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if so.count() == 1:
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good +=1
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# print(f"OK - Entrance {ent} '{ent_type}' station '{st}'")
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@ -121,12 +131,7 @@ def validate_entrance_stations(ent=None):
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bads +=1
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tag_lower_case(st)
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continue
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except:
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message = f" ! - Entrance {ent} has invalid '{ent_type}' station '{st}'. EXCEPTION."
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stash_data_issue(parser="positions", message=message, url=url)
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print(message)
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bads +=1
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continue
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if ent:
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return validate_ent(ent)
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@ -255,8 +260,10 @@ def LoadPositions():
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mappoints = {}
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for pt in MapLocations().points():
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svxid, number, point_type, label = pt
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mappoints[svxid] = True
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svxid, number, point_type, ent = pt
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#((st, str(ent), ent.needs_surface_work(), ent))
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mappoints[svxid] = ent
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if svxid =="1":
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print(f"BOGUS {pt}") # this is now checked for when importing the entrance tags in parsers/caves.py
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@ -294,6 +301,7 @@ def LoadPositions():
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ss.x = float(x)
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ss.y = float(y)
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ss.z = float(z)
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ss.entrance = mappoints[sid]
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ss.save()
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found += 1
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except:
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@ -175,7 +175,7 @@
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<dt>Explorers</dt><dd>{{ ent.entrance.explorers|safe }}</dd>
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{% endif %}
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{% if ent.entrance.northing %}
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<dt>Location</dt><dd>UTM33 Northing: {{ ent.entrance.northing|safe }}, Easting: {{ ent.entrance.easting|safe }}, {{ ent.entrance.alt|safe }}m</dd>
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<dt>Location</dt><dd> Northing: {{ ent.entrance.northing|safe }}, Easting: {{ ent.entrance.easting|safe }} (UTM or BMN, depending...), {{ ent.entrance.alt|safe }}m</dd>
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{% endif %}
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{% if ent.entrance.lat_wgs84 %}
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<dt>Location</dt><dd><a href="https://www.openstreetmap.org/?mlat={{ ent.entrance.lat_wgs84|floatformat:7}}&mlon={{ent.entrance.long_wgs84|floatformat:7}}">WGS84 Lat.: {{ ent.entrance.lat_wgs84|floatformat:7 }} N, Long.:{{ ent.entrance.long_wgs84|floatformat:7 }} E</a></dd>
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@ -27,15 +27,25 @@ Coordinate systems in Austria are explained in:<br>
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<p>The Lat. Long. coordinates are manually entered using a phone or a hand-held GPS device at (or near) the entrance.
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<p>For the Cave column, if there is an official cave name, then it is shown.
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Otherwise whatever other name we can find for it is shown <em>in italics</em>.
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For the Entrance column, if the entrance has a name (e.g. Grüner Eingang in Schwarzmooskogeleishöhle) then it is shown.
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Otherwise it says "Anon:" followed by whatever other name we can find for it, usually the entrance id slug, <em>in italics</em>.
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<style>
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th, td {
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padding-left: 5px;
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padding-right: 5px;
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</style>
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<table>
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<tr><th>Cave</th><th>Entrance</th><th>best Easting</th><th>best Northing</th><th>GPS Lat</th><th>GPS Long</th><th>tag</th><th>tag exact</th><th>tag other</th><th>slug</th></tr>
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<p>OK now for the nasty bit. Many of the older caves did not have easting & northing in UTM 33T at all, but (probably) in BMN and converting between BMN into UTM requires ellipsoids and bessel functions.. or we can just take a linear approximation, which is what I have done here:<br>
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e.northingUTM = e.northingBMN + 5198919.918<br>
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e.eastingUTM = e.easting + 374854.63<br>
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Such converted eastings and northings are <em>in italics</em> in the table below. As you can see, some were wildly out.
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<p>These magic numbers simply come from assuming that both BMN and UTM are in metres, and linear over our area, and then taking the avergage of the offsets for 5 locations, the 5 cave entrances at the bottom of this page:
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<a href="http://localhost:8000/handbook/survey/coord.htm#summary">Olaf's Coordinates</a>.
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<p>This horrible approximation is accruate to ~8m in the northing and ~30m in the easting.
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<table>BMN
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<tr><th>Cave</th><th>Entrance slug</th><th>Easting</th><th>Northing</th><th>best tag easting</th><th>best tag northing</th>
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<th>Δ x</th>
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<th>Δ y</th>
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<th>Distance (m)</th></tr>
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{% for ent in ents %}
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<tr>
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<td style="text-align:left">
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@ -47,28 +57,24 @@ th, td {
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<em>{{c|safe}}</em>
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{% endif %}</a><br>
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{% endfor %}</td>
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<td style="text-align:left">
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{% if ent.name %}
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{{ent.name|safe}}
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{% else %}
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Anon: <em>{{ent|safe}}</em>
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{% endif %}
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</td>
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<td style="text-align:right">{{ent.easting|floatformat:2}}</td>
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<td style="text-align:right">{{ent.northing|floatformat:2}}</td>
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<td style="text-align:right">{{ent.lat_wgs84|floatformat:6}}</td>
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<td style="text-align:right">{{ent.long_wgs84|floatformat:6}}</td>
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<td style="text-align:right">{{ent.tag_station}}</td>
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<td style="text-align:right">{{ent.exact_station}}</td>
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<td style="text-align:right">{{ent.other_station}}</td>
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<td style="text-align:right">{{ent.slug}}</td>
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<td style="text-align:right; {% if ent.bmn %}font-style: italic{% endif %}">{{ent.easting|floatformat:2}}</td>
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<td style="text-align:right; {% if ent.bmn %}font-style: italic{% endif %}">{{ent.northing|floatformat:2}}</td>
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<td style="text-align:right">{{ent.best_station_object.x|floatformat:2}}</td>
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<td style="text-align:right">{{ent.best_station_object.y|floatformat:2}}</td>
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<td style="text-align:right; {% if ent.bmn %}font-style: italic{% endif %}">{{ent.diffx|floatformat:0}}</td>
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<td style="text-align:right; {% if ent.bmn %}font-style: italic{% endif %}">{{ent.diffy|floatformat:0}}</td>
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<td style="text-align:right; {% if ent.bmn %}font-style: italic{% endif %}">{{ent.error|floatformat:0}}</td>
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</tr>
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{% endfor %}
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</table>
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<p>and now with the locations of the survey stations. All as UTM eatings, norhtings:
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<p>and now the GPS equivalents:
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<table>
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<tr><th>Cave</th><th>best Lat</th><th>best Long</th><th>tag</th><th>tag Lat</th><th>tag Long</th><th>tag exact</th><th>exact Lat</th><th>exact Long</th><th>tag other</th><th>other Lat</th><th>other Long</th></tr>
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{% for ent in ents %}
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<tr><th>Cave</th><th>GPS Lat</th><th>GPS Long</th><th>best Lat</th><th>best Long</th><th>tag</th><th>tag Lat</th><th>tag Long</th><th>tag exact</th><th>exact Lat</th><th>exact Long</th><th>tag other</th><th>other Lat</th><th>other Long</th></tr>
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{% for ent in gpsents %}
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<tr>
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<td style="text-align:left">
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{% for c in ent.cavelist %}
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@ -80,6 +86,8 @@ th, td {
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{% endif %}</a><br>
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{% endfor %}</td>
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<td style="text-align:right">{{ent.lat_wgs84|floatformat:6}}</td>
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<td style="text-align:right">{{ent.long_wgs84|floatformat:6}}</td>
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<td style="text-align:right">{{ent.lat|floatformat:6}}</td>
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<td style="text-align:right">{{ent.long|floatformat:6}}</td>
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<td style="text-align:right">{{ent.tag_station}}</td>
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@ -104,8 +112,9 @@ the assemblage of survex files, including fixed point files, and is probably 'co
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<a href="/handbook/survey/coord2.html">GPS and coordinate systems</a><br>
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<a href="/handbook/survey/coord.htm">Basic Coordinate Systems</a>.
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<p>This next table is of all the survex stations in troggle: i.e. only those survey stations which have been identified with an Entrance by manually editing the Entrance data.
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<table cellpadding="6" cellspacing="8">
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<tr><th>Survex Station</th><th>x</th><th>y</th><th>lat.</th><th>long.</th></tr>
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<tr><th>Survex Station</th><th>x</th><th>y</th><th>lat.</th><th>long.</th><th>Used on ent</th></tr>
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{% for s in stations %}
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<tr>
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<td style="text-align:left; width:240px"> {{s.name|safe}} </td>
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@ -113,7 +122,7 @@ the assemblage of survex files, including fixed point files, and is probably 'co
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<td style="text-align:right; width:90px"> {{s.y|floatformat:2}} </td>
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<td style="text-align:right; width:90px"> {{s.lat|floatformat:6}} </td>
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<td style="text-align:right; width:90px"> {{s.long|floatformat:6}} </td>
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<td style="text-align:right;" > {{s.entrance|safe}} </td>
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</tr>
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{% empty %}
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<td colspan="3"> NO STATION DATA - This is due to survex (cavern) failing on the entire dataset.
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