I have a contour map that is provided to me by a private company. it comes in the form of a .dwg that works for autocad. In the past i have gotten contour data from usgs but the data provided to me is much more accurate. I want these contours in the .dwg to get loaded into arcmap so I can use them to delineate watersheds as per usual procedure.
Try to open .dwg file from ArcMap's add data option, locate the .dwg file, double click on it and it will show you it's sub-files, open Polyline file or any other file from it as u desire.
Then you can create its boundary and DEM to carry out your tasks.
Related
I want to have the names of the polygons of kml file, displayed in google earth.
I converted the kml file from a shapefile in qgis. The kml file is loaded normally, i can see the name and the description in the list on the google earth panel. I cannot see it on the map though. How can I visualize the names?
I know that i can create a second kml file with points and have those displayed but I need to have one single file for all.
How could I do that?
Thank you
If you don't want to use a 2nd KML file for the centroid points + labels, then you can take your original KML file, wrap each polygon in a MultiGeometry tag, and add the polygon's centroid Point feature into each MuiltiGeometry. Then you can have the labels on those points, and have them be part of the same file as the polygons. Unfortunately I don't know of any easy way to create such a thing in QGIS, so you're probably left with hand-editing or programatically generating the KML.
I have 1500 pictures that need the address where they were taken to be shown in the corner of the picture. I have the pictures geo-tagged.
I need help extracting the GPS data and converting that to an address.
Then getting that address and saving it into the picture in the bottom right corner. Can anyone help or point me in the right direction please?
You're going to need two things. First you need an application that will extract the EXIF data that you are interested in. You should be able to write this yourself as it is fairly simple to do. You will need the JPEG standard and just need enough of it to identify the markers; specifically the APPn markers. You are also going to need the EXIF and (possibly the) TIFF standards to figure out how to extract the data you need form the EXIF APPn marker.
Writing the information to the corner of the image is the tough part. There are probably command line applications that will allow you to do that already. If worst comes to worst, there are various language API's that will allow you to read a JPEG stream into a buffer; draw text to the buffer; then write the buffer back to a JPEG stream.
You will most likely need to use a programming language for this; I think Python would be suitable as it's easy to get started and has libraries needed for your task.
For example, in order to extract the location (coordinates) from the JPEG files you can use pyexiv2.
To transform those coordinates to addresses you need to use a geocoding service such as Google's Geocoding API - you can use their Python library directly or code your own using something like requests.
Now that you have the address data you can overlay that data onto images using Python's pillow library.
If you're looking for some code to get started let me shamelessly plug my own project called photomap; you can find code to read GPS information from images here: https://github.com/iticus/photomap/blob/master/handlers.py#L170
I'm currently looking for a way to create a 'configurator' for a upholsters, similar to http://digitaldraping.com/configurator/furniture-sofa/?Cushions_Plain-Cream.png,Sofa_Stripe-Orange.png - you select your fabrics and they are 'drawn' on the sofa automatically.
Unfortunately, all the sites I've looked at seem to use pre-rendered transparent PNGs that are overlaid over each other to build up the full picture. The problem here is that we've figured out that we'd require over 120,000 different images to cover all models, fabrics etc!!
I've looked at a few 3d texture tools such as http://www.arahne.si/products/arah-drape.html, hoping that one of them would have a CLI option where you give it a pre-created wireframe, and a fabric to overlay, and it generates the required image on the fly, but so far everything seems to require real-time use of the GUI to use it.
So, is there a CLI tool that would do what I'm after, or can anyone suggest a way to manipulate the GUI automatically? (from a tech point of view, I'm comfortable with C, Bash, Python or PHP as a solution!)
Thanks!
ArahDrape 2.2 can now work from a command line without any GUI interface. You can also call ArahDrape as a C library. In this way, it can be used in a web server to create texture mapped images on the fly. The command line options are explained below.
ArahDrape 2.2j command line version, ©2015 Arahne
usage:
adCommand -o /tmp/outputImage.png -tN /home/user/texture.png [-hidemodel] [-divide 2] [-filterPNG] [-compressPNG 2] [-m /home/user/model.png] -owner name -activation 174b3cfb49e9 /home/user/project.drape
Input and output images can have png, .tif or .jpg extensions
-o output_image_file
-tN texture_image_file [N goes from 0 to 199]
-hidemodel will render all areas not in region as white
-divide N [N goes from 2 to 5] divide resulting image pixel size
-filterPNG if you do not filter it, rendering is faster
-compressPNG N [N goes from 0 to 9] lower number saves faster, but bigger files
-m model_image_file use this if you want to replace model image from the project; must have same pixel size
-owner owner_name pass the given owner name
-activation activation_code pass the given activation code
last parameter should be ArahDrape project file
All files should be entered with full path.
If you need spaces in filenames, use quotes "" around the filename.
If you provide only Owner name, without activation code, program returns registration code.
ArahDrape supports batch export.
Open ArahDrape project, click on texture you wish to replace, put all your texture in a directory, select from menu
Textures > Browse textures, and as you click the texture to load it, program will save the draped picture. If you have thousands of images, use keyboard shortcut = and program will automatically do them all.
Alpha channel transparency is supported in loading model images or textures, and saving the draped images, as long as you use PNG or TIFF.
Please check this video to see how
ArahDrape works in batch mode.
we (http://digitaldraping.com/) can do just what you are asking. We have two options creating images and rendering a meshed image on the fly. Just get in touch if you still need this solution.
I've read much about PDF extractions and libraries (as iText) but i just haven't found a solution to extract images and text (with coordinates) from a PDF.
The task is to scan PDF with catalog of products and extract each image. There is an image code printed next to each image and also a list of product codes for products that are shown on the image.
I know that there is no way to extract structured info from a PDF like this but with coordinates of all image and text objects I could write code to identify linked text by its distance from the image. Then I could split text using a RegExp and find out what is a product code, what is an image code etc.
Could you recommend a good and working solution for the task?
Use XPDF (http://www.foolabs.com/xpdf/)
It can extract all the characters in the PDF with co-ordinates (pdftotext -bbox [sourcefile] [outputfile]) and also all the images and SVGs in the PDF.
It's open source (GPLv2) and supports a lot of additional extraction functionalities as well.
Several Java libraries can do this. Have you looked at JPedal or PdfBox?
If a commercial library is an option for you, you could try Amyuni PDF Creator .Net or Amyuni PDF Creator ActiveX. You could use the method IacDocument.GetObjectsInRectangle to retrieve all the "graphic objects" of your interest, then use the ObjectType attribute to separate images from text. The library already provides an algorithm for putting close text together. From the documentation:
IacDocument.GetObjectsInRectangle Method
The GetObjectsInRectangle method gets all the objects that are in the specified rectangle.
Usual disclaimer applies.
HOw ot compare 3D image files in testcomplete. My application processes some 3D images i want it to be compared with the reference. Image file types are .spt, .vtk, .mdb ,.dcm.
Someone help me.
You can probably use checkpoints for this purpose. For example:
To verify an image displayed on screen, use a region checkpoint.
To verify the actual file that holds the image data, use a file checkpoint.
Well, for DICOM images you could think about converting those into bitmaps and have TestComplete compare the bitmaps. Admitted, there is one additional step that you have to take care of, and this is the choice of a (command line) tool that does the conversion for you. I think IrfanView does the job. Give it a try and post your results.