Is there a way (the best would be an Excel importer) to import entries to an Umbraco Contour form?
As far as I know, there is currently no way to import records to Contour out of the box I'm afraid. You'd have to use the Contour APIs and do it yourself, although there will be some complexities around items that have lists, like dropdown lists or multiple checkboxes.
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Okey, I am so lost in here that I cannot make even a concrete question, so I shall be very general and hope that someone can point me in the right direction.
I am producing some scientific plots in Julia with PyPlot, and I am very satisfied with the results ( adequate and clear estetics and I can handle the syntax to create very complex images ). But I need to produce a so called "heatmap" ( a 2D bitmap image ) in which the user should be able to select a set of points of the image with the mouse. The selection, which will be confined to a discrete grid, shall be stored in some Iterable, an Array or similar. I have no idea where to start, if at the same PyPlot library or using something like Gtk or GtkReact (this last one I couldn't get the examples running). Can I be pointed to the right direction?
PyPlot is an interface to Python's matplotlib which makes static plots.
Use Plotly inside a Jupyter notebook instead: https://plot.ly/julia/heatmaps/,
there are same solutions for rendering vector tiles on client-side webbrowser. But i don't find one for my expectations.
I want to display a huge amount data (points, polygons) in a map viewer. I need vector data because of dynamic styling and interactions of the features. Its too much to load all in Google Maps and from my perspective its the right way to use vector tiles, because only nessesary and aggregated data for the viewpoint will be load.
So i dont need to style the basemap like i found thousands of examples. I only want to load my data as a vector tile layer on a raster (google satelite). But my features should by stylable, need to have normal events like clicking or mouseover and store properties. And last but not least it should be really fast ;-)
What viewer i need? And what is the workflow to create and serve the data as vector tiles?
I have been working on a similar problem, strech - technologies are evolving, but mapbox-gl.js is one viewer you can use. You might be able to use mapzen's system as well, but I haven't tried their system with large amounts of features, whereas I know mapbox does work better than leaflet and openlayers for your scenario.
I need to create web page where user can choose a type of a list (linked, doubly linked, circular linked list etc.) and see how it looks like. User can add and remove elements from a list and see how list is changing.
Which library is better to use for visualization of List? It would be good to find library which can take a list as input param and return image or canvas. But If such library doesn't exists I need library which can draw rectangles with text inside and connect it with each other with lines.
D3.js is more than powerful enough to do what you want. However, if all you want rectangles with in a list, you could use a table or divs for that.
Edit:
To figure out how to do this, I would recommend running through a tutorial on D3. Here are links to several. There is a bit of a learning curve, but once you get over the learning curve, it is very nice. As far as examples, what you want is similar to this or this except your layout is much simpler.
This question may also be helpful
I am new to d3 geo. My task is to make a map of Boston and add some interactive features to it.
So far I've been able to get an outline of Boston. But the base map should be comparable to something you'd see in Google Maps - it should have buildings, roads, street names and city names, rivers, etc. A basic geography that makes the region more familiar.
For now, I don't need to pan, and may have just two or three zoom states.
All the visualizations I've seen that overlay interactive features onto maps like this seem to use images for the underlying maps: windhistory, polymaps, google maps and more. So I guess my questions are:
Why do some maps use images for the "backdrop"? Is it just the easiest way to build on top of existing maps? Is it more performant?
If I go with the images approach, are there any limitations to the features I can add? I'm hoping to do things like windmaps, animations, heatmaps, etc.
What are the copyright implications for using images? I imagine the answer to this is, "depends on which images I use," but are there some standard libraries that have no strings attached? For example I know if I use Google Maps, I have to display their logo, there's an API limit, etc. Are there any standard sources that are completely open?
Are there any examples where geography is added purely through TopoJSON?
Sorry if some of these seem obvious, but I am completely new to maps and just don't know the standard practices. Thanks for any help!
A quick take on your questions. Hopefully someone with more mapping experience can give you more detail:
Why do some maps use images for the "backdrop"?
File size and computation time, mostly. Drawing complete maps with buildings, roads, and topography requires a lot of data and a lot of time for the browser to render it. If your browser DOM gets too complicated, it can slow down all interactions even after the original drawing.
If I go with the images approach, are there any limitations to the features I can add?
There's a reason most interactive maps use multiple layers. The background images are best for the underlying "lay of the land" type imagery, anything you want to be interactive should be on top with SVG.
What are the copyright implications for using images?
If you're using someone's images, you have to follow their licence. You might want to look at the OpenStreetMap project.
Are there any examples where geography is added purely through TopoJSON?
I suppose that depends on what you mean by "geography"; Mike Bostock has generated topoJSON for a variety of features based on US Atlas data.
As for whether it makes sense: TopoJSON encodes paths/boundaries directly, and encodes regions as the area enclosed by a set of boundaries. You could use it to encode streets and rivers and even building outlines, but you're not saving any file size relative regular GeoJSON because those paths generally aren't duplicated the way that region boundaries are. Relative to using image tiles, any improvement in file size would be countered with increased processing time.
I'm thinking of writing few blogs on arrays and linked list and for that I need some good drawing tool for drawing images to explain the concept and the logic. I don't want to copy/paste images from other source so if anyone among you knows about any such tool in which I can create images fast and similar to ones given in books and on other site, please let me know.
Graphviz can draw linked data structures by using special "record" node shapes. Here's one example which was automatically generated during a debug session.
I believe that Google Docs Draw, could satisfy your needs.
http://googlesystem.blogspot.com/2009/03/drawing-in-google-docs.html
I use Omni Graffle for the sort of task you are describing.
http://www.omnigroup.com/products/omnigraffle/