Is there an easy way to plot earthquakes by having a metadata in .csv format?

Q&A
1

I need to plot my data which is a lot on a map.
This data has a lot of information, many rows and columns … and the text is a mix of text and numbers.

Is there a way to not have to change anything and plot the data contained within the file?

2

Is the long and lat in the 1st and 2nd column?

3

no are in 6 and 7

4

I assume 6 and 7 when 1st column is 1. GMT treats the first column as column #0.
So try to add -i5,6 in your command, to read column 6 and 7 as lon/lat.

5

plot [WARNING]: Mismatch between actual (0) and expected (2) fields near line 1254 in file

i received this error

6

I need an example to be able to help you.

1 Like
7

Anna

¿Could you give a piece of the data from your file .cvs? Probably, you have to pre-process before plotting in GMT, and it would not require a lot of work.

               Greetings Adrián
1 Like
8

thanks you

I have developed a very small script in python that extracts the columns of my interest and now the various earthquakes have been plotted with their own long and lat.

9

probably you can help me for this…

13.1932 42.7592 2.1
1 13.1932 42.7592 2.1
2 13.1932 42.7592 2.1
3 13.1932 42.7592 2.1
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44 13.1667 42.8823 3.0
45 13.1667 42.8823 3.0
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107 11.3308 44.8832 2.8
108 11.3308 44.8832 2.8
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111 11.3308 44.8832 2.8
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124 13.1943 42.9492 2.3
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134 13.1943 42.9492 2.3
135 16.5357 40.7237 0.9
136 16.5357 40.7237 0.9
137 13.2067 42.6527 2.1
138 13.2067 42.6527 2.1
139 13.2067 42.6527 2.1
140 13.2067 42.6527 2.1
141 13.2067 42.6527 2.1
142 13.2067 42.6527 2.1

dont see the first column…
now plot the magnitude with different colors? for magnitude and depth?

10

If your first record posted here is correct then it is missing a leading record number 0. You would need to use -i to select the columns you want from, e.g., -i1,2 for lon lat. Start there to make a plot with fixed size and color, then work on a CPT for coloring things - see the tutorial.

11

thanks soo much.

i see tutorial and example 22 and i obtain my results.