I'm attempting to implement a Microsoft Pivot viewer within my application, I've decided that a cross between a JIT collection and Linked Collection is the best case however I'm having a few issues.
The images for the collection are generated by a C# Windows Service that runs overnight generating new images that are required.
The CXML file is then generated dynamically when the user request the data using a custom HttpHandler.
The issue is that with 10000+ items my development machine runs out of memory whilst trying to turn the generated png/jpg images into a DZC.
Is there a tool available that I could use to turn the images that I have into DZI images. I've looked at the Deep Zoom Composer, but I really need something that I can run overnight to convert the images, currently I have about 45,000 images that I need to convert, the Composer just locks up trying to do anything with that amount of images.
Ideally I would like to be able to create the DZI images directly using the service instead of creating png/jpg images first.
i could not see if you already had these tools or not but here goes nothing:
http://www.silverlight.net/archives/whitepapers/deep-zoom-tools
if you use these tools you can preprocess the images and use them later in your collection. if you need dynamic images you might want to take a look at the Silverligh 5 RC (of which the latest version includes the new pivotviewer). this new version converts your xaml into dzi at runtime and is a really cool control!
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I'm trying to create a map viewer for an existing C# WinForms application. I've installed and hooked up the GreatMaps (GMap.net) controls no problem and that's all working fine. The quirk in this is that it needs to work offline (as it's an application that gets used by users who aren't always in locations where there's a mobile signal).
The offline cache mode works fine for GMap but, we've got to build the cache beforehand which we can do but, as we need the whole of the UK, will be a pain (especially as we have to go down to street level).
Does anybody know if there any existing cache files that we can download and use? I've looked at downloading OSM files but haven't got the faintest idea how to use them, convert them (into the gmdb format that GMap seems to use).
Any ideas?
Check out VectorTileRenderer (https://github.com/AliFlux/VectorTileRenderer) which has a demo for Gmap.net. All you need is an MBTiles file which you can download for free at OpenMapTiles.org (https://openmaptiles.com/downloads/europe/british-isles/)
I work for a small publishing company with an internal website that displays a static HTML table of our published products.
We have a need to be able to list and sort published products (about 1-2 items are published per day) dynamically that is being fed from an Excel spreadsheet. The Excel spreadsheet is what we are currently using to maintain the data. The Excel spreadsheet is on a shared network drive available to the company.
I am familiar with AngularJS, ReactJS, and VueJS2 for front-end development and was wondering if I would be able to use one of those tools to consume a Excel file, parse it to JSON, and then display it dynamically on the client side.
Is something like this is possible?
When a user finishes editing the Excel sheet and saves it to the shared network drive, is there a script that would automatically save the data as JSON? I assume we would then simply have our Javascript framework reference and consume the saved JSON to populate its published products list.
Note: We are unable to use a relational database at this time (ie MySQL).
Part 1 - generating json from excel...
front-end technologies are not the way to go. You need to run a service that watches folder for change (like nodejs or python). Saving as csv instead of xls might make things easier as you may not need extra libraries to make sense of your xls file
Part 2, displaying json data...
Your browser, by default, cannot load a local json file. So you may need to run a server (again nodejs and python make this relatively easy) to host your json file.
there are many ways of presenting data these days, but without knowing some of your particular and based on the information you did share, looks like you've got a steep learning curve to get something like this going.
So I'm guessing the answer to this is "no", but is there any way to export a map I've designed online with mapbox studio (https://www.mapbox.com/studio/) into a .mbtiles file so I can host it myself?
Honestly, I'd be willing to pay money for this (saving me the trouble of getting a world .pbf file and getting it into a postgresql db is really a pain, especially with a mediocre computer like mine)
It sounds like maybe there used to be a way to do this, but as of now it looks like they've taken away this ability. I can see a lot of different ways to use a map I've created, but everything forces me to use mapbox as the hosting service... it seems there's no way to download a map I've created.
I think your assumption is correct. It does seem MapBox wants you to use their APIs and API keys.
However, there is a partial solution with raster tiles if you can fallback to that. Or you can get vector mbtiles from OSM data instead of from mapbox servers.
mapbox offline support for android/ios
I've contacted mapbox support in April 2017, and what I've been told is that although the style files that you can download from MapBox studio don't contain tiles, there's a way to have them render offline on Android/iOS.
If you would like to use Mapbox maps offline, you would need to follow the examples shown for Android or iOS, depending on your platform. Essentially, the mobile SDKs take in a style URL that points to your custom style created in Mapbox Studio, and the SDKs handle the downloading of all other resources needed to keep the map offline (fonts, icons, tilesets, etc). Check out our guide on offline maps to read more about how this works.
Links:
Offline Maps with MapBox
Mapbox Android-SDK Offline example
Mapbox iOS-SDK Offline Example
From a quick look at the example code, it would seem that the downloading of the tiles is done within the App, but done ahead of time, for instance just after you install the app and you still have
network connectivity. I don't immediately see whether or not your Mapbox API keys are involved at all in this download, with respect to your billing concern. There is a 6000 offline tile limit per offline region.
Not for desktop: The site also mentions that offline is not an option for MapboxGl-JS, so you'd have to hack it up to make your offline region available on desktop web browsers.
mapbox studio export as mbtiles...
There was supposedly a non obvious option in settings to download your source as an mbtiles file in mapbox studio classic. A mapbox classic issue on github has a screenshot of where the button should be. It's possible that option is gone now.
That github project, https://github.com/klokantech/vector-tiles-sample, provides links to projects/tools that can break the mbtiles file into its contained pbf files, which are a protobuf compressed format for each vectorial tile (https://github.com/mapbox/mbutil). Slightly outdated.
An approach which might otherwise work, is to cache the network requests ahead of time for each tile retrieved from MapBox, and then in your APP proxy the requests to your cache. I'm not sure whether that's against the ToS though. You'd probably have to do it programmatically with all XYZ coords you wish to cache.
Taking a dive with tippecanoe to produce vector tiles
You can create vector tiles with tippecanoe (and host them yourself). It's not MapBox, I know. But it might get your farther in the long run.
Nice short blog article about it: http://fuzzytolerance.info/blog/2017/02/02/Making-your-own-tiles-with-Tippecanoe/
The mbtiles you create, you can layer them, and possibly style them with the open source maputnik (which is somewhat like the style editor of mapbox). Then you take serve mbtiles with your own server, and plug in your style into mapboxGL-js or openlayers.
TileMill -- (.mbtiles with raster tiles) fallback
There is TileMill which is still available (but deprecated), runs on the desktop, and will allow you to create maps from shapefiles (e.g. you can get openstreetmap shapefiles for single cities at https://mapzen.com/data/metro-extracts/ ).
TileMill, will give you a mbtiles file at the end of the process. Although, that mbtiles contains raster tiles, not vector tiles. Vector tiles can be styled dynamically so it's nice on mobile when you want to accommodate various situations with fonts or adapt lighting.
Raster tiles might suffice, because in your app you probably will be able to render other interactive objects on top of that base layer. OpenLayers is one portable framework where you'd be able to do that, for instance -- allowing the user to draw objects or click points of interest that you've loaded from a database separately from the map data.
Get OSM-based vector tiles instead of mapbox
There seems to be an alternative maker of Vector tiles now, http://openmaptiles.org (used to be http://osm2vectortiles.org ).
You can go here, and download an mbtiles file for a city of your choice for instance: https://openmaptiles.org/downloads/#city , then serve that file (locally) for your app with a tile server. (or use one of the tools mentioned above to break it into the individual pbf files and read the files from local disk / memory)
With this approach, you combine a vector mbtiles from OSM, with the style you've created in mapbox studio (mapbox studio lets you download a zip file with your .json style in it), and you can still use MapBoxGL to display it.
There's Maputnik http://maputnik.com/ which you can use to edit a mapboxgl style file (the editor works with local storage). and there's presumably https://github.com/boundlessgeo/ol-mapbox-style which allows you to convert that style into a piece of code suitable for OpenLayer's style API.
As far as I know Mapbox does not provide map downloads. You could download vector maps directly using their vector tiles API and be charged against your vector tile count. 200K tiles are free per month. In my experimentation, 80K tiles represent about 200 sqaure km of area. So you'd run out of free tiles very quickly for large areas and would have to pay 1$ per about every 10km more of square km area. (all very approx values based on nominal observation). Also, these leaves the challenge to actually package the .mvt files into a MBTiles format.
I suggest an alternative way instead.
You can create MBTiles from any .osm.pbf file using this tool - https://github.com/systemed/tilemaker
Download .osm.pbf file from Geofabric. To download for a custom area, you can use Protomaps or BBBike Extract
Download tilemaker
Execute the following command
tilemaker --input netherlands.osm.pbf --output netherlands.mbtiles --process resources/process-openmaptiles.lua --config resources/config-openmaptiles.json
You can read more about it in this blog post - https://blog.kleunen.nl/blog/tilemaker-generate-map
To use the same style that you created in Mapbox Studio, you can download your style's JSON file by clicking on Share -> Download. This zip will contain your JSON file which describes all the colors, etc you customised.
If you are planning to show this MBTile on Android app, you'll just have to embed this JSON that you downloaded and the MBTiles file in the app and point the JSON to the MBTiles file. I've written how to do this in this blogpost. I tried to make the JSON work but only partly succeed after some edits. However ideally it should work since its based on the openmaptiles schema.
I need to print a SSRS report in PDF format from a WinForms application written in C#. The report is a PDF document (containing text, images & tables), in a byte array - and I don't want to save it to disk for security/performance reasons. The requirements for printing are that it needs to be done:
- in the fastest way possible
- with no user interaction
- without the need to install anything on the client machine (we can't rely on any Adobe products being installed)
- third-party libraries can be used, as long as they can be installed together with the application
I came to 2 potential solutions:
1. using MigraDoc - but I can't find a way to load and print an existing file, only a newly created PDF file, or one already saved to disk
2. sending the PDF directly to the printer, using "PDF Direct Print"/PCL/etc. This seems to be the fastest option, but I haven't implemented it yet, and it seems to not be supported by all printers.
Does anybody have any suggestions on how to implement the options above, or any other options which meet the requirements?
MigraDoc cannot print PDF files, so one of your potential solutions is void.
Here's the story: I've been working on putting together an app in VS10 using Windows Forms in C++. This is my first experience with winforms, although I have a fair amount of experience with C++ and have worked with MFC a bit. The program needs to aquire data input from a hardware measurement system and the backend for that is mostly worked out. What I've been a bit stuck on is how to easily work with displaying this data in forms with the DataGridView and Chart objects. I'd also like to be able to save various sets of data and the programs current settings to disk that can be easily recalled and displayed in the program at a later point.
The solution I've been attempting so far has been to create a DataSet object for a certain program instance which holds some DataTables for the data and current settings. This is easily saved and read to XML files using the DataSet methods, which is nice. The tricky part for me using this method has been trying to sync up the program's display data and settings in the DataGridViews and Charts. It seems like these controls are really meant to be designed through the GUI. Maybe I'm just a noob, but I couldn't figure out how to get the DataSet I designed to link with my Charts using the "Add Project data source" dialog, so instead I set up a bindingSource and then proceeded to set Chart settings manually in the code. That's been getting hairy pretty quickly.
What would you have done to implement this, and how would you advise proceeding? I'm sure there has to be a much simpler way of doing this.
I've used Microsoft Chart Controls to display data from hardware measurement systems before with good results.
We store our data separately in arrays and when we want to display something, just call the AddXY function on the items to add a point. Configuring the graph in the first place is more easily done in designer though. Have a look at the samples for more info.