when testing player_app_with_solutions.py in jupytercon2017-holoviews-tutorial/solutions/apps I am getting the following error ''' ERROR:'charmap' codec can't decode byte 0x9d in position 3167: character maps to ''' which is going away if you load csv file without parsing dates.

Here is the list of my environment libraries:

Name Version Build Channel

alabaster 0.7.12 py36_0
appdirs 1.4.3 py36h28b3542_0
arrow-cpp 0.11.0 py36_vc14h6a212fc_0 [vc14] conda-forge
asn1crypto 0.24.0 py36_0
astroid 2.0.4 py36_0
atomicwrites 1.2.1 py36_0
attrs 18.2.0 py36h28b3542_0
automat 0.7.0 py36_0
babel 2.6.0 py36_0
backcall 0.1.0 py36_0
blas 1.0 mkl
bleach 2.1.4 py36_0
bokeh 1.0.0dev6 pyhdd78535_0 pyviz/label/dev
boost-cpp 1.67.0 vc14_0 [vc14] conda-forge
ca-certificates 2018.03.07 0
cartopy 0.16.0 py36hbd42bde_0
certifi 2018.8.24 py36_1
cffi 1.11.5 py36h74b6da3_1
chardet 3.0.4 py36_1
click 7.0 py36_0
click-plugins 1.0.3 py36_1
cligj 0.4.0 py36_1
cloudpickle 0.5.6 py36_0
colorama 0.3.9 py36h029ae33_0
colorcet 1.0.0 py36_0
constantly 15.1.0 py36h28b3542_0
cryptography 2.3.1 py36h74b6da3_0
curl 7.60.0 vc14_0 [vc14] conda-forge
cycler 0.10.0 py36h009560c_0
cytoolz 0.9.0.1 py36hfa6e2cd_1
dask 0.19.2 py36_0
dask-core 0.19.2 py36_0
dask-glm 0.1.0 py36_0
dask-ml 0.10.0 py36_0
dask-searchcv 0.2.0 py36_0
datashader 0.6.8 py_0 pyviz/label/dev
datashape 0.5.4 py36_1
decorator 4.3.0 py36_0
descartes 1.1.0 py36_0
distributed 1.23.2 py36_0
docutils 0.14 py36h6012d8f_0
entrypoints 0.2.3 py36_2
expat 2.2.5 vc14_0 [vc14] conda-forge
fastparquet 0.1.6 py36hfa6e2cd_0
fiona 1.7.10 py36h5bf8d1d_0
freetype 2.8.1 vc14_0 [vc14] conda-forge
freexl 1.0.5 vc14_0 [vc14] conda-forge
futures-compat 1.0 py3_0
gdal 2.2.2 py36hcebd033_1
geopandas 0.3.0 py36_0
geos 3.6.2 h9ef7328_2
geoviews 1.5.4a13 py_0 pyviz/label/dev
geoviews-core 1.5.4a13 py_0 pyviz/label/dev
gflags 2.2.1 vc14_0 [vc14] conda-forge
glog 0.3.5 h6538335_1
hdf4 4.2.13 vc14_0 [vc14] conda-forge
hdf5 1.10.1 vc14_2 [vc14] conda-forge
heapdict 1.0.0 py36_2
holoviews 1.11.0a7 py_0 pyviz/label/dev
html5lib 1.0.1 py36_0
hvplot 0.2.1 py_0 pyviz/label/dev
hyperlink 18.0.0 py36_0
icc_rt 2017.0.4 h97af966_0
icu 58.2 vc14_0 [vc14] conda-forge
idna 2.7 py36_0
imageio 2.4.1 py36_0
imagesize 1.1.0 py36_0
incremental 17.5.0 py36_0
intel-openmp 2019.0 118
ipykernel 4.10.0 py36_0
ipython 6.5.0 py36_0
ipython_genutils 0.2.0 py36h3c5d0ee_0
ipywidgets 7.4.2 py36_0
isort 4.3.4 py36_0
jedi 0.12.1 py36_0
jinja2 2.10 py36_0
jpeg 9b vc14_2 [vc14] conda-forge
jsonschema 2.6.0 py36h7636477_0
jupyter 1.0.0 py36_7
jupyter_client 5.2.3 py36_0
jupyter_console 5.2.0 py36_1
jupyter_core 4.4.0 py36_0
jupyterlab_launcher 0.13.1 py36_0
kealib 1.4.7 vc14_4 [vc14] conda-forge
keyring 13.2.1 py36_0
kiwisolver 1.0.1 py36h6538335_0
krb5 1.14.6 vc14_0 [vc14] conda-forge
lazy-object-proxy 1.3.1 py36hfa6e2cd_2
libboost 1.67.0 hd9e427e_4
libcurl 7.61.1 h7602738_0
libgdal 2.2.2 h2727f2b_1
libiconv 1.15 h1df5818_7
libkml 1.3.0 he5f2a48_4
libnetcdf 4.4.1.1 vc14_10 [vc14] conda-forge
libpng 1.6.34 vc14_0 [vc14] conda-forge
libpq 9.6.6 hfe3f2bf_0
libsodium 1.0.16 vc14_0 [vc14] conda-forge
libspatialindex 1.8.5 vc14_1 [vc14] conda-forge
libspatialite 4.3.0a h383548d_18
libssh2 1.8.0 hd619d38_4
libtiff 4.0.9 vc14_0 [vc14] conda-forge
libxml2 2.9.7 vc14_0 [vc14] conda-forge
libxslt 1.1.32 vc14_0 [vc14] conda-forge
llvmlite 0.24.0 py36h6538335_0
locket 0.2.0 py36hfed976d_1
lxml 4.2.3 py36heafd4d3_0 conda-forge
m2w64-gcc-libgfortran 5.3.0 6
m2w64-gcc-libs 5.3.0 7
m2w64-gcc-libs-core 5.3.0 7
m2w64-gmp 6.1.0 2
m2w64-libwinpthread-git 5.0.0.4634.697f757 2
markupsafe 1.0 py36hfa6e2cd_1
matplotlib 2.2.2 py36h153e9ff_1
mccabe 0.6.1 py36_1
mistune 0.8.3 py36hfa6e2cd_1
mkl 2019.0 118
mkl_fft 1.0.6 py36hdbbee80_0
mkl_random 1.0.1 py36h77b88f5_1
more-itertools 4.3.0 py36_0
msgpack-python 0.5.6 py36he980bc4_1
msys2-conda-epoch 20160418 1
multipledispatch 0.6.0 py36_0
munch 2.3.2 py36_0
nbconvert 5.3.1 py36_0
nbformat 4.4.0 py36h3a5bc1b_0
netcdf4 1.3.1 py36h8bd0532_2
networkx 2.2 py36_1
notebook 5.7.0 py36_0
numba 0.39.0 py36h830ac7b_0
numpy 1.15.2 py36ha559c80_0
numpy-base 1.15.2 py36h8128ebf_0
numpydoc 0.8.0 py36_0
olefile 0.46 py36_0
openjpeg 2.3.0 vc14_2 [vc14] conda-forge
openssl 1.0.2p hfa6e2cd_0
owslib 0.16.0 py36_0
packaging 18.0 py36_0
pandas 0.23.4 py36h830ac7b_0
pandoc 2.2.3.2 0
pandocfilters 1.4.2 py36_1
panel 0.1.0a11 py_0 pyviz/label/dev
param 1.8.0a9 py_0 pyviz/label/dev
parambokeh 0.2.3 py_0 pyviz/label/dev
paramnb 2.0.4 py_0 pyviz/label/dev
parso 0.3.1 py36_0
partd 0.3.8 py36hc8e763b_0
patsy 0.5.0 py36_0
phantomjs 2.1.1 0 pyviz/label/dev
pickleshare 0.7.5 py36_0
pillow 5.2.0 py36_0 conda-forge
pip 18.1
pip 10.0.1 py36_0
pluggy 0.7.1 py36h28b3542_0
proj4 4.9.3 vc14_5 [vc14] conda-forge
prometheus_client 0.3.1 py36h28b3542_0
prompt_toolkit 1.0.15 py36h60b8f86_0
psutil 5.4.7 py36hfa6e2cd_0
psycopg2 2.7.5 py36h74b6da3_1002 conda-forge
py 1.6.0 py36_0
pyarrow 0.11.0 py36h6538335_0 conda-forge
pyasn1 0.4.4 py36h28b3542_0
pyasn1-modules 0.2.2 py36_0
pycodestyle 2.4.0 py36_0
pycparser 2.19 py36_0
pyct 0.4.5 py_0 pyviz/label/dev
pyct-core 0.4.5 py_0 pyviz/label/dev
pyepsg 0.3.2 py36_0
pyflakes 2.0.0 py36_0
pygments 2.2.0 py36hb010967_0
pylint 2.1.1 py36_0
pyopenssl 18.0.0 py36_0
pyparsing 2.2.1 py36_0
pyproj 1.9.5.1 py36_0
pyqt 5.9.2 py36h6538335_2
pysal 1.14.4.post1 py36_1
pyshp 1.2.12 py36_0
pysocks 1.6.8 py36_0
pytest 3.8.1 py36_0
python 3.6.6 hea74fb7_0
python-dateutil 2.7.3 py36_0
python-snappy 0.5.3 py36h6538335_0
pytz 2018.5 py36_0
pyviz 0.9.13a0 py_0 pyviz/label/dev
pyviz_comms 0.6.0 py_0 pyviz/label/dev
pywavelets 1.0.1 py36h452e1ab_0 conda-forge
pywin32 223 py36hfa6e2cd_1
pywinpty 0.5.4 py36_0
pyyaml 3.13 py36hfa6e2cd_0
pyzmq 17.1.2 py36hfa6e2cd_0
qt 5.9.6 vc14h62aca36_0
qtawesome 0.5.1 py36_1
qtconsole 4.4.1 py36_0
qtpy 1.5.1 py36_0
requests 2.19.1 py36_0
rise 5.3.0 py36_0 pyviz/label/dev
rope 0.11.0 py36_0
rtree 0.8.3 py36_0
scikit-image 0.14.0 py36h6538335_1
scikit-learn 0.20.0 py36heebcf9a_1
scipy 1.1.0 py36h4f6bf74_1
seaborn 0.9.0 py36_0
selenium 3.14.0 py36hfa6e2cd_0
send2trash 1.5.0 py36_0
service_identity 17.0.0 py36h28b3542_0
setuptools 40.4.3 py36_0
shapely 1.6.4 py36hc90234e_0
simplegeneric 0.8.1 py36_2
sip 4.19.8 py36h6538335_0
six 1.11.0 py36_1
snappy 1.1.7 vc14_1 [vc14] conda-forge
snowballstemmer 1.2.1 py36h763602f_0
sortedcontainers 2.0.5 py36_0
sphinx 1.8.1 py36_0
sphinxcontrib 1.0 py36_1
sphinxcontrib-websupport 1.1.0 py36_1
spyder 3.3.1 py36_1
spyder-kernels 0.2.6 py36_0
sqlalchemy 1.2.12 py36hfa6e2cd_1000 conda-forge
sqlite 3.25.2 hfa6e2cd_0
statsmodels 0.9.0 py36h452e1ab_0
streamz 0.4.0 py36_0
tblib 1.3.2 py36h30f5020_0
terminado 0.8.1 py36_1
testpath 0.3.1 py36h2698cfe_0
thrift 0.11.0 py36h6538335_0
tk 8.6.8 vc14_0 [vc14] conda-forge
toolz 0.9.0 py36_0
tornado 5.1.1 py36hfa6e2cd_0
traitlets 4.3.2 py36h096827d_0
twisted 18.7.0 py36hfa6e2cd_1
typed-ast 1.1.0 py36hfa6e2cd_0
urllib3 1.23 py36_0
vc 14 0 conda-forge
vs2015_runtime 14.15.26706 h3a45250_0
wcwidth 0.1.7 py36h3d5aa90_0
webencodings 0.5.1 py36_1
wheel 0.32.0 py36_0
widgetsnbextension 3.4.2 py36_0
win_inet_pton 1.0.1 py36_1
wincertstore 0.2 py36h7fe50ca_0
winpty 0.4.3 4
wrapt 1.10.11 py36hfa6e2cd_2
xarray 0.10.9 py36_0
xerces-c 3.2.1 vc14_0 [vc14] conda-forge
xz 5.2.4 h2fa13f4_4
yaml 0.1.7 vc14_0 [vc14] conda-forge
zeromq 4.2.5 vc14_2 [vc14] conda-forge
zict 0.1.3 py36_0
zlib 1.2.11 vc14_0 [vc14] conda-forge
zope 1.0 py36_1
zope.interface 4.5.0 py36hfa6e2cd_0

• Merge columnar data into containers tutorial.
• Then the gridded data no longer needs to be omitted, as it's just a tiny amount of new material afterwards
• Add a section explaining what can be accepted as data for an Element
• Simplify the Parameters and Widgets page now that the concepts are introduced earlier, or at least define a better map. Indicate that this section will take less time
• Make initial taxi example match the one in the final tutorial (hours, not passengers)
• Fix WMTS string spec and reflect it back into the materials
• Adjust timings -- more on earlier, less on later
• More and more interesting exercises
• Improve or remove the annotations2 example
• Demos should include holomap/facets
• Annotating your data -- tell story using dataframes instead
• Custom Interactivity could use some more compelling examples
• Eliminate view parameters from deploying tutorial
• Example of writing your own element, not wrapping new JS but putting together existing glyphs, etc. into a new higher-level object.
• Fix outdated example that uses .csv

We suggested people file issues on hv about:

• Adding annotations in screen coordinates so that they don't disappear on zooming, either by actual implementation or by examples of working around it.

While testing "Branching out: large data, geo data, custom controls" in 01_Workflow_Introduction.ipynb

from colorcet import fire
from holoviews.operation.datashader import datashade
from geoviews.tile_sources import EsriImagery

topts = dict(width=700, height=600, bgcolor='black', xaxis=None, yaxis=None, show_grid=False)
tiles = EsriImagery.clone(crs=crs.GOOGLE_MERCATOR).options(**topts) 

dopts = dict(width=1000, height=600, x_sampling=0.5, y_sampling=0.5)
taxi  = dd.read_parquet('../data/nyc_taxi_wide.parq').persist()
pts   = hv.Points(taxi, ['pickup_x', 'pickup_y'])
trips = datashade(pts, cmap=fire, **dopts)

tiles * trips

Generated error:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-20-86d04e05f5aa> in <module>
      5 
      6 topts = dict(width=700, height=600, bgcolor='black', xaxis=None, yaxis=None, show_grid=False)
----> 7 tiles = EsriImagery.clone(crs=crs.GOOGLE_MERCATOR).options(**topts)
      8 
      9 dopts = dict(width=1000, height=600, x_sampling=0.5, y_sampling=0.5)

~\AppData\Local\Continuum\anaconda3\envs\pyviz-tutorial\lib\site-packages\holoviews\core\dimension.py in options(self, *args, **kwargs)
   1452             expanded = {}
   1453         else:
-> 1454             expanded = opts.expand_options(options, backend)
   1455         return self.opts(expanded, backend, clone)
   1456 

~\AppData\Local\Continuum\anaconda3\envs\pyviz-tutorial\lib\site-packages\holoviews\util\__init__.py in expand_options(cls, options, backend)
    166             if objtype not in backend_options:
    167                 raise ValueError('%s type not found, could not apply options.'
--> 168                                  % objtype)
    169             obj_options = backend_options[objtype]
    170             expanded[objspec] = {g: {} for g in obj_options.groups}

ValueError: WMTS type not found, could not apply options.