Hi, I am trying to display coordinates on a GMapPlot. The problem is some of the coordinates are dynamically fetched when you zoom into a certain area of the map. I can fetch the coordinate points via a callback and display them without the GMapPlot. But as soon as I try to integrate the two it doesn’t work.
Can you provide a minimal runnable code sample that reproduces the issue? More information about platform, browser, and versions is generally also needed to do any sort of investigation.
Thanks,
Bryan
···
On Feb 4, 2016, at 06:13, [email protected] wrote:
Hi, I am trying to display coordinates on a GMapPlot. The problem is some of the coordinates are dynamically fetched when you zoom into a certain area of the map. I can fetch the coordinate points via a callback and display them without the GMapPlot. But as soon as I try to integrate the two it doesn’t work.
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Yeah sure!
···
On Thu, Feb 4, 2016 at 4:18 AM, Bryan Van de Ven [email protected] wrote:
Can you provide a minimal runnable code sample that reproduces the issue? More information about platform, browser, and versions is generally also needed to do any sort of investigation.
Thanks,
Bryan
On Feb 4, 2016, at 06:13, [email protected] wrote:
Hi, I am trying to display coordinates on a GMapPlot. The problem is some of the coordinates are dynamically fetched when you zoom into a certain area of the map. I can fetch the coordinate points via a callback and display them without the GMapPlot. But as soon as I try to integrate the two it doesn’t work.
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Sorry. DB and Data are the same source in the examples above. Apologies I have not added those.
···
On Thu, Feb 4, 2016 at 4:34 AM, Nitesh Anandan [email protected] wrote:
Yeah sure!
#################################################################
Here I am fetching data from a source and displaying on a map. Does what it should.
################################################################
Data.init()
SAMPLE_SIZE = 1000
xs, ys = Data.getCurrent(SAMPLE_SIZE)
source = ColumnDataSource(data=dict(x=xs, y=ys))
map_options = GMapOptions(lat=30.29, lng=-97.73, map_type=“roadmap”, zoom=11)
plot = GMapPlot(
x_range=DataRange1d(), y_range=DataRange1d(), map_options=map_options, title=“Plot of Stations”
)
circle = Circle(x=“x”, y=“y”, size=15, fill_color=“blue”, fill_alpha=0.8, line_color=None)
plot.add_glyph(source, circle)
plot.add_tools(PanTool(), WheelZoomTool(), BoxSelectTool())
output_file(“gmap_plot.html”)
print type(source)
show(plot)
#################################################################
Here, I am displaying datapoints, some which are obscured/hidden. The hidden ones appear once you zoom into an area in the figure…This functionality works as well via a callback system.
What I am trying to do is to integrate these two pieces so that I can have the map appear behind the circle glyphs/data points, and still have the functionality where the obscured points become visible when you zoom into a specified area.
################################################################
DB.init()
session = push_session(curdoc())
SAMPLE_SIZE = 1000
xs, ys = DB.getCurrent(SAMPLE_SIZE)
source = ColumnDataSource(data=dict(x=xs, y=ys))
plot = Figure(plot_height=800,
plot_width=900,
title=“Plot of Stations”,
tools=“pan, reset, resize, save, wheel_zoom”)
plot.circle(‘x’, ‘y’, source=source, line_width=3, line_alpha=0.6)
def update_coordinates(attrname, old, name):
global N
global xs, ys
xbeg, xend = plot.x_range.start, plot.x_range.end
ybeg, yend = plot.y_range.start, plot.y_range.end
#filtered = filter(lambda pr: xend > pr[0] > xbeg and yend > pr[1] > ybeg, coordinate_cache)
xs, ys = DB.fetch(xbeg, xend, ybeg, yend, SAMPLE_SIZE)
if len(xs) > 0 and len(ys) > 0:
source.data = dict(x=xs, y=ys)
print xbeg, xend
print ybeg, yend
plot.x_range.on_change(‘end’, update_coordinates)
curdoc().add_root(HBox(children=[plot], width=800))
session.show()
session.loop_until_closed()
On Thu, Feb 4, 2016 at 4:18 AM, Bryan Van de Ven [email protected] wrote:
Can you provide a minimal runnable code sample that reproduces the issue? More information about platform, browser, and versions is generally also needed to do any sort of investigation.
Thanks,
Bryan
On Feb 4, 2016, at 06:13, [email protected] wrote:
Hi, I am trying to display coordinates on a GMapPlot. The problem is some of the coordinates are dynamically fetched when you zoom into a certain area of the map. I can fetch the coordinate points via a callback and display them without the GMapPlot. But as soon as I try to integrate the two it doesn’t work.
–
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Hi Nitesh,
It helps A LOT if you can provide running code even with a few bits of
sample data that we can run so we can see the problem in action.
Would that be possible?
You can just make a fake class with __init__ and fetch methods that
return similar data.
Sincerely,
Sarah Bird
···
On 2/4/16 4:38 AM, Nitesh Anandan wrote:
Sorry. DB and Data are the same source in the examples above. Apologies
I have not added those.On Thu, Feb 4, 2016 at 4:34 AM, Nitesh Anandan > <[email protected] <mailto:[email protected]>> wrote:
Yeah sure!
#################################################################
Here I am fetching data from a source and displaying on a map. Does
what it should.
################################################################Data.__init__()
SAMPLE_SIZE = 1000
xs, ys = Data.getCurrent(SAMPLE_SIZE)
source = ColumnDataSource(data=dict(x=xs, y=ys))map_options = GMapOptions(lat=30.29, lng=-97.73, map_type="roadmap",
zoom=11)plot = GMapPlot(
x_range=DataRange1d(), y_range=DataRange1d(),
map_options=map_options, title="Plot of Stations"
)circle = Circle(x="x", y="y", size=15, fill_color="blue",
fill_alpha=0.8, line_color=None)
plot.add_glyph(source, circle)plot.add_tools(PanTool(), WheelZoomTool(), BoxSelectTool())
output_file("gmap_plot.html")print type(source)
show(plot)
#################################################################
Here, I am displaying datapoints, some which are obscured/hidden.
The hidden ones appear once you zoom into an area in the
figure...This functionality works as well via a callback system.What I am trying to do is to integrate these two pieces so that I
can have the map appear behind the circle glyphs/data points, and
still have the functionality where the obscured points become
visible when you zoom into a specified area.
################################################################DB.__init__()
session = push_session(curdoc())
SAMPLE_SIZE = 1000
xs, ys = DB.getCurrent(SAMPLE_SIZE)
source = ColumnDataSource(data=dict(x=xs, y=ys))
plot = Figure(plot_height=800,
plot_width=900,
title="Plot of Stations",
tools="pan, reset, resize, save, wheel_zoom")plot.circle('x', 'y', source=source, line_width=3, line_alpha=0.6)
def update_coordinates(attrname, old, name):
global N
global xs, ys
xbeg, xend = plot.x_range.start, plot.x_range.end
ybeg, yend = plot.y_range.start, plot.y_range.end
#filtered = filter(lambda pr: xend > pr[0] > xbeg and yend >
pr[1] > ybeg, coordinate_cache)
xs, ys = DB.fetch(xbeg, xend, ybeg, yend, SAMPLE_SIZE)if len(xs) > 0 and len(ys) > 0:
source.data = dict(x=xs, y=ys)print xbeg, xend
print ybeg, yendplot.x_range.on_change('end', update_coordinates)
curdoc().add_root(HBox(children=[plot], width=800))
session.show()
session.loop_until_closed()On Thu, Feb 4, 2016 at 4:18 AM, Bryan Van de Ven > <[email protected] <mailto:[email protected]>> wrote:
Can you provide a minimal runnable code sample that reproduces
the issue? More information about platform, browser, and
versions is generally also needed to do any sort of investigation.Thanks,
Bryan
On Feb 4, 2016, at 06:13, [email protected] > <mailto:[email protected]> wrote:
Hi, I am trying to display coordinates on a GMapPlot. The
problem is some of the coordinates are dynamically fetched
when you zoom into a certain area of the map. I can fetch the
coordinate points via a callback and display them without the
GMapPlot. But as soon as I try to integrate the two it
doesn't work.--
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