Dear Naveed

This is a very easy task and shall be done using ArcGIS. please follow these steps:

1- prepare an excel file having the following columns and data

lat lon station name trend results trend direction

XX XX Cairo, EG 0.12 positive

xxx xx Alex, EG -0.15 negative

and so on.

2- save this file as .csv or .xls

3- open new file in arcgis ---> click "add data" from the toolbars --> select the .csv file.

4- the file will be on the "table of content" window under layers.

5- right click the file and select "display x,y, ,,,". in the new window select lat for y and lon for x.

6- this will make a new layer. it is better to save this layer as a shape file before the next steps.

7- right click new layer --> data --> export data--> select location --> ok --> ok to add the new file (name it M layer).

8- right click the new layer (M layer) --> proprietaries --> symbology --> category --> unique value --> select the trend direction.

9- then from the beneath window select the symbol (triangle) and color for the positive and negative. note to make the triangle down change the angle. ---> then apply

10- from the layer proprieties window select label then select the trend results, and mark check for show label then click ok.

Thats all

Good luck.

First of all many many thanks, I was stucked since last three days.

I have done the 8 steps, but 9th and 10th step is not successfully performed.

What was wrong in the 9th?

For more discussion of 9th step, attached a screen shot.

After doing step 8, click add all values then select each one to change the symbol by clicking on it.

Dear Muhammad Salem, Thank you very much for detailed step by step guide.