I have a single-band, georeferenced.tif file that I would like to display on top of a Leaflet.js map, using the ImageOverlay function. Unfortunately, Leaflet seems only to accept PNG or JPG files, and I haven't been able to produce a PNG file that Leaflet will display. The original.tif file is in EPSG:102022 and the pixel values are represented by floating-point 64-bit numbers (Float64).
Fblax Dividend
Antique Map File Cabinet
Here is a snippet from gdalinfo: Origin = (-120,-300) Pixel Size = (1000000000,-1000000000) Metadata: AREAORPOINT=Area Image Structure Metadata: COMPRESSION=LZW INTERLEAVE=BAND Band 1 Block=2433x1 Type=Float64, ColorInterp=Gray Min=0.000 Max=28.907 Minimum=0.000, Maximum=28.907, Mean=0.574, StdDev=1.419 NoData Value=-1.9999994e+308 Metadata: STATISTICSMAXIMUM=89906 STATISTICSMEAN=0.9673 STATISTICSMINIMUM=0.752851 STATISTICSSTDDEV=1.403 I transformed the original image from EPSG:102022 to EPSG:4326 using gdalwarp, and that seems to have worked fine. However, when I try to convert the reprojected tif image to a PNG image, I get an error message that the data type has to be changed from Float64 to an unsigned 8 or 16-bit integer. I tried gdaltranslate -ot UInt16 -of PNG but for some reason it appears to lose a lot of resolution (when I look at in in QGIS) and the resulting PNG file will not display in Leaflet. I also tried an online converter which produced a PNG image that looked good in QGIS but wouldn't display in Leaflet. I can see the bounding box in the correct position on the Leaflet map, but there is just a question mark inside. My Leaflet code is standard, except for substituting a local file path for the URL: var southWest = L.latLng(-,), northEast = L.latLng( -,), imageBounds = L.latLngBounds(southWest, northEast); var imageUrl = '//image.png'; L.imageOverlay(imageUrl, imageBounds).addTo(map); I've tried lots of variations.
I'd also like to be able to control the color scale in the png file and I'm not sure how to do that. I've seen some complicated suggestions using other software to produce tiled layers, but I'm hoping that there's a simpler solution, since this is just a single image. I'd be grateful for any strategy suggestions. For tricky (and scriptable) image manipulation, my tool of choice is. It's not a particularly easy-to-learn tool, but it can do things like, or, control the number of channels of the output file (RGB/greyscale/etc), or anything, really.
With a bit of work, it should be able to do things like automatically trim the range of values from the GeoTIFF and map that to 8-bit channels. Please note that ImageMagick (and GIMP, for this matter) strip the GeoTIFF information off the files. Use and if you need to preserve that information.
Also, you mention.and the resulting PNG file will not display in Leaflet What happens if you try to load that file directly in your web browser? Also, double-check uppercase/lowercase filenames!
MAP is an image format associated with Game Studio, a software pack that allows users to create simple games without having any programming knowledge. The MAP format can also be associated with Garmin Fenix, a GPS device under the form of a wristwatch, designed for tracking outdoor activities.
In this case, the file contains a simplified map which can be used for orientation and track logs. The PNG (Portable Network Graphics) file format was designed in the mid-1990s as an improved alternative to the previously existing and formats, and as an extension which would be particularly web-friendly. In time, PNG files have gained a wide popularity and are highly appreciated at the moment for their ability to provide a lossless compression of images, which translates in high-quality and detailed renderings. So, how to change MAP into PNG? The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter.
Although it is fast, this software is extremely efficient in managing a wide range of conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert MAPs.
But at the same time, it will allow you to apply a wide range of. Download and Install reaConverter reaConverter is quick to download, install and launch, and you don't need to be an IT specialist in order to understand in a few minutes how it operates. Load MAP Files Start reaConverter and load all the.map files you intend to convert into.png because, as opposed to most free online converters, reaConverter supports batch conversion. So you can save the time and energy you would lose with doing repetitive operations. Select MAPs from a folder or by drag-and-dropping them directly into the reaConverter window.
Choose Output Folder Go to the Saving options tab and decide where you want to save new.png files. You can also spend a few more moments to apply additional editing to the images prepared for conversion. Select PNG as Output Format Then pick the PNG as output format. To help you do this, a series of buttons is conveniently placed at the bottom of the reaConverter window, so you can simply press on the one you need or click Plus button to add new options.
Then simply press the Start button and your conversion will begin in no time! Video tutorial.