Latest Contributions by MOHAMMEDHABBOUB

I realize the original post wants to do this in GIS, so if you already know how to do this outside of GIS, skip this comment. This is a regression problem, where your x variable varies over time (x in the graph). You can simply plot the points (in Excel, R, or whatever) and calculate the regression line to extrapolate outside the measured range. Find the equation for the regression line, and solve for your x. For example, in the attached graph, I made up y values: 1984 = 0, 1986 = 1, 1992 = 4.5, 1999 = 4.6, 2003 = 6, 2004 = 6.1, 2010 = 6.8 (obviously you have the correct x values). 2014 would have a value of 8.521. Thank you, but as you noticed I was looking for a way to do so in arcgis or any other GIS software ... View more

Habboub, There must be some variables that impact the movement over time, and those need to be assigned weighting factors for use in the prediction of future locations. You need to understand why 1984 to 1986 2 year period is comparatively large vs 1992 to 1999 7 year period. Any prediction based on the xy locations versus time without consideration of other variables may as well be random. Try adding some more information for better responses. Regards, Jim Well, If I add a rainfall as the main parameter>>> could this be done? ... View more

Hello everybody, I have 7 points (x,y coordinate is known) each point represent a position of the same object in a specific time of the year (say January 1984, January 1986 ,January 1999.....) [See attached file] How could I know the expected position in (say January 2014?) using python or Arcgis? Yours Habboub ... View more

Yes , I could do it on excel but I have lots of such point groups which will take a very long time ... View more

Anybody can help? ... View more

Anybody can help? ... View more

Anybody can help? ... View more

Hello everybody, I have 7 points (x,y coordinate is known) each point represent a position of the same object in a specific time of the year (say January 1984, January 1986 ,January 1999.....) [See attached file] How could I know the expected position in (say January 2014?) using Arcgis? Yours Habboub ... View more

Hello everybody, I have 7 points (x,y coordinate is known) each point represent a position of the same object in a specific time of the year (say January 1984, January 1986 ,January 1999.....) [See attached file] How could I know the expected position in (say January 2014?) using Arcgis? Yours Habboub ... View more

Hello everybody, I have 7 points (x,y coordinate is known) each point represent a position of the same object in a specific time of the year (say January 1984, January 1986 ,January 1999.....) [See attached file] How could I know the expected position in (say January 2014?) using Arcgis? Yours Habboub ... View more

Thanks Jamal, This seems very helpful.. I'll start hitting the books and see if I need further help Thanks again. Habboub ... View more

Hi Mohammed, This would allow a crude estimation of any trends between each year. To predict future lake shorelines you could use predicted lake shoreline elevations and fill the DEM to that elevation effectively creating the predicted lake shoreline Dakota_20 That's nice but the problem is that the lake is shrinking not expanding and the DEM doesn't tell me the elevation under water so I can't get the elevation under water body !! ... View more