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• Creating a task that runs at incorrect login credentials

  - by GDA

  I'm trying to set up a personalized security option on my computer to take a picture using the webcam whenever someone tries to log onto my computer using an incorrect password. I've set up the task in the task scheduler, and I can get it to pass, but then the problem begins. When the task passes, it triggers like a million times and keeps going until I disable the task. Does anybody know why it might be doing that and how to make it not?

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• Installing a php extension (xdiff) from pecl on Linux

  - by wilsonsilva

  I was getting this error on my php script: Fatal error: Call to undefined function xdiff_file_diff() I realised that I didn't had the xdiff extension installed. When I tried to install it using the install pecl xdiff command, I got this errors (among other lines): configure: WARNING: You will need re2c 0.13.4 or later if you want to regenerate PHP configure: error: Please reinstall the libxdiff distribution Then I installed re2c and libxdiff: wget http://www.compdigitec.com/labs/files/re2c_0135_redhat.rpm wget ftp://ftp.task.gda.pl/vol/vol1/ftp.pld-linux.org/dists/2.0/PLD/i386/PLD/RPMS/libxdiff-0.7-1.i386.rpm rpm -ivh re2c_0135_redhat.rpm rpm -ivh libxdiff-0.7-1.i386 But after that I still get the same errors. PS: I've Googled a LOT and I found a couple of people with this problem but they didn't get an answer either :(

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• Google maps spatial reference system

  - by JavaRocky

  What is Google map's spatial reference system using when you enter a lat, long into the maps search bar? I've found hints that it might be WGS84 but after converting to that coordinate system, nothing shows up when i paste the coordinates into the google maps search box. I am converting from GDA MGA 56. Sample: Input MGA56 coords: 336301, 6253363 Expected WGS86 coords: -33.8473340793201, 151.230631835944 I get: 16834916.928327594 -4008321.1020318186 Spatial coord systems: EPSG:28356 for MGA56 EPSG:900913 for WGS86 (google maps) I am using geotools to do the transform: CoordinateReferenceSystem crsMga56 = CRS.parseWKT(mga56); CoordinateReferenceSystem crsGmaps = CRS.parseWKT(gmaps); Coordinate coordinate = new Coordinate(336301, 6253363); Point point = new GeometryFactory().createPoint(coordinate); MathTransform transform = CRS.findMathTransform(crsMga56, crsGmaps); Geometry geometry = JTS.transform(point, transform); I know the transform is not correct, as when i use an online tool it gives me the correct coords. http://www.environment.gov.au/cgi-bin/transform/mga2geo%5Fgda.pl?east=336301&north=6253363&zone=56

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• Calculating bounding grid coordinates to a user click on google maps/google earth

  - by user170304

  Hello, I have a requirement to calculate the centroid or geodesic midpoint of when a user clicks in between the lat/long grid crossing. The crossing forms a square in most parts of GE and sometimes elongated rectangles. This is due to the shape of the earth of course. I'm looking for a valid mathematical formula that would allow a user to click anywhere in between this grid and then an accurate function (in Javascript or server side code) that would take an assumed grid resolution (say 1km intervals for this discussion) and the input coordinates that should return a centroid coordinate within that graticule grid. To clarify please take a look at the attached image to my google group post: http://google-earth-api.googlegroups.com/web/Picture+5.png?gda=h5oFPz8AAAD315KpovipQeBwdfGpmW3ZhBc9PTADwYa-n193hZ6AItFmHuno63c7phcEXYVuRA6ccyFKn-rNKC-d1pM%5FIdV0&gsc=sz6bbAsAAABBKF7YXWYyc4GmXg-QruHj What I need to be able to do is if a user clicks anywhere in this grid square, I need to find the centroid or center point of that grid intersection/square or at least the bounding grid coordinates (that make the square). If we assume that the grid is UTM standard and has a max resolution of 1km (or make this a parameter), I need to detect the four other points nearby and then calculating the centroid is not as difficult. I welcome any feedback you all may have and appreciate it. I don't have a simple way of letting a user click anywhere on the grid and finding the grid bounding coordinates (making a square of 4 coordinates) or the centroid / midpoint of the graticule grid square necessary. One thought is to use assumptions as much as possible using a reference such as UTM coordinate reference. If I assume that the grid is X degrees wide, can we have a pure javascript function take any input coordinate and return for me the bounding graticule coordinates in Decimal Degrees? Another thought I had was to create the grid in a geo-spatial layer to take any input coordinate and return the nearest centroid of the graticule? Does this make sense? Thanks! Omar

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