Latest Contributions by HoussamHaddad

Alright, I'll look into it. But I just want to quantify the orientation with respect to North. So like saying for example 343 fractures have 10 angle and so on. Here is an example of how my plot should look like: http://fas.org/irp/imint/docs/rst/Sect2/originals/Fig2_44.jpg Thank you for your help, I'll dig into it. ... View more

Yes, it's of course much more time consuming to do it manually but I think I can manage. So once I have all my polylines how can I analyze their orientations and distribution? is there a tool for that? Also should I have all my polylines in one single shape file? ... View more

thank you Mr Patterson. So once I have my units to meters (or millimeters in this case). How can I proceed to calculate the volume of the cavity using the cut/fill tool? ... View more

Yes the key information is available. (For this example, the length is equal to 7.5 mm and the width is 4.5 mm . The number of columns is 389 and rows are 250. Cell Size (X= 0.017992832, Y= 0.017992832). However, my issue is how can I set the scale for ArcGIS so for example the measure tool shows the right units (instead of unknown) and how to project the raster correctly so I can edit shapes and perform geometry calculations like the intended cut/fill tool. Could you give a step by step tutorial on how to this? Can you please also elaborate on the ground-based dimension versus the pixel based dimension idea? I do not know if I understood correctly since my samples are not "ground-based"? Thank you ... View more

Hello Mr. Patterson, thank you again for taking the time to help me out. I will try to use filters to clean up the image. However, would it be perhaps possible to map these fractures manually using polylines? If so, how can I then analyze the overall orientation of the polylines? Thank you in advance ... View more

Hello Mr Patterson again and thank you for the support, here is an example of the fractures I want to map. ... View more

Hello Mr Patterson, thank you for the quick reply. it is much appreciated. The data for the raster was actually an ASCII acquired using a white light interferometer and then converted and prepared for ArcGIS using Matlab. Later it was imported to ArcGIS using the tool ASCII to raster. Then this resulting raster is converted to data points using the tool raster to point and finally it the points scatter is interpolated back to raster using natural neighbor. Therefore these raster aren't geologically referenced. But I know the distance from two points, namely the dimension of the data. I am still confused how I should go on and tell ArcGIS that this distance from these two points in pixels are this much in µm and set the scale as a result. I thought it would be a simple process to do so just like ImageJ. Is it still necessary to project the data with a geographic dataframe? Attached is how one of these final raster look like. I apologize that the legend is not included, but the hillshade effect would hopefully make it clear that the green and lighter colored regions form the depression (crater) that I want to calculate its volume using the cut/fill tool. A profile has been drawn across to further explain this. Thank you in advance and I hope you can assist me further. Until then let's keep making the world a happier place Hasso ... View more