def update_parameter_data(cx_str, cy_str, t):
# string parsing
cx_fun, cx_sym = my_bokeh_utils.string_to_function_parser(cx_str, ['t'])
cy_fun, cy_sym = my_bokeh_utils.string_to_function_parser(cy_str, ['t'])
from sympy import diff
dcx_sym = diff(cx_sym, 't')
dcy_sym = diff(cy_sym, 't')
dcx_fun = my_bokeh_utils.sym_to_function_parser(dcx_sym, 't')
dcy_fun = my_bokeh_utils.sym_to_function_parser(dcy_sym, 't')
# crating sample
x_val = cx_fun(t)
y_val = cy_fun(t)
dx_val = dcx_fun(t)
dy_val = dcy_fun(t)
xx, hx = np.linspace(source_view.data['x_start'][0], source_view.data['x_end'][0], curveintegral_settings.n_sample,
retstep=True)
ssdict, spdict, _ = my_bokeh_utils.quiver_to_data(x=np.array(x_val), y=np.array(y_val), u=np.array(dx_val), v=np.array(dy_val), h=2*hx,
do_normalization=True, fix_at_middle=False)
# save data
source_param.data = dict(x=[x_val], y=[y_val], t=[t], x0=ssdict['x0'], y0=ssdict['y0'],
x1=ssdict['x1'], y1=ssdict['y1'], xs=spdict['xs'], ys=spdict['ys'])
print "curve point was updated with t=%f" % (t)
def update_parameter_data(cx_str, cy_str, t):
# string parsing
cx_fun, cx_sym = my_bokeh_utils.string_to_function_parser(cx_str, ['t'])
cy_fun, cy_sym = my_bokeh_utils.string_to_function_parser(cy_str, ['t'])
from sympy import diff
dcx_sym = diff(cx_sym, 't')
dcy_sym = diff(cy_sym, 't')
dcx_fun = my_bokeh_utils.sym_to_function_parser(dcx_sym, 't')
dcy_fun = my_bokeh_utils.sym_to_function_parser(dcy_sym, 't')
# crating sample
x_val = cx_fun(t)
y_val = cy_fun(t)
dx_val = dcx_fun(t)
dy_val = dcy_fun(t)
xx, hx = np.linspace(source_view.data['x_start'][0],
source_view.data['x_end'][0],
curveintegral_settings.n_sample,
retstep=True)
ssdict, spdict, _ = my_bokeh_utils.quiver_to_data(x=np.array(x_val),
y=np.array(y_val),
u=np.array(dx_val),
v=np.array(dy_val),
h=2 * hx,
do_normalization=True,
fix_at_middle=False)
# save data
source_param.data = dict(x=[x_val],
y=[y_val],
t=[t],
x0=ssdict['x0'],
y0=ssdict['y0'],
x1=ssdict['x1'],
y1=ssdict['y1'],
xs=spdict['xs'],
ys=spdict['ys'])
print "curve point was updated with t=%f" % (t)
def update_quiver_data(u_str, v_str):
"""
updates the bokeh.models.ColumnDataSource_s holding the quiver data
:param u_str: string, first component of the vector values function
:param v_str: string, second component of the vector values function
:return:
"""
# string parsing
u_fun, _ = my_bokeh_utils.string_to_function_parser(u_str, ['x', 'y'])
v_fun, _ = my_bokeh_utils.string_to_function_parser(v_str, ['x', 'y'])
# crating samples
x_val, y_val, u_val, v_val, h = get_samples(u_fun, v_fun)
# generating quiver data and updating sources
ssdict, spdict, sbdict = my_bokeh_utils.quiver_to_data(x=x_val, y=y_val, u=u_val, v=v_val, h=h,
do_normalization=False)
# save quiver data to respective ColumnDataSource_s
source_segments.data = ssdict
source_patches.data = spdict
source_basept.data = sbdict
print "quiver data was updated for u(x,y) = %s, v(x,y) = %s" % (u_str, v_str)
def update_quiver_data(u_str, v_str):
"""
updates the bokeh.models.ColumnDataSource_s holding the quiver data
:param u_str: string, first component of the vector values function
:param v_str: string, second component of the vector values function
:return:
"""
# string parsing
u_fun, _ = my_bokeh_utils.string_to_function_parser(u_str, ['x', 'y'])
v_fun, _ = my_bokeh_utils.string_to_function_parser(v_str, ['x', 'y'])
# crating samples
x_val, y_val, u_val, v_val, h = get_samples(u_fun, v_fun)
# generating quiver data and updating sources
ssdict, spdict, sbdict = my_bokeh_utils.quiver_to_data(
x=x_val, y=y_val, u=u_val, v=v_val, h=h, do_normalization=False)
# save quiver data to respective ColumnDataSource_s
source_segments.data = ssdict
source_patches.data = spdict
source_basept.data = sbdict
print "quiver data was updated for u(x,y) = %s, v(x,y) = %s" % (u_str,
v_str)
