The figures you are using must be in EPS format therefore they are not compatible when you build a PDF file directly. In this way you can only compile your document into DVI format and then convert the DVI file into PS and finally convert the PS into PDF.
Have a look at this page: http://amath.colorado.edu/documentation/LaTeX/basics/steps/help_2pdf.html
If you are using winedt, simply go to options->execution modes-> and set your compiler to execute dvi->ps->pdf. Your figure will show in the resulting pdf. However, you have to change back to normal settings if your image isnot eps.
The figures you are using must be in EPS format therefore they are not compatible when you build a PDF file directly and to computing please use "pdflatex space file.tex"
your statement is not true in general. It depends on the distribution one has; for example, TeX Live is able to let pdflatex handle automatically EPS figures from 2010. This is stated in the TeX Live documentation http://tug.org/texlive/doc/texlive-en/texlive-en.pdf (see 9.1.7 2010):
"In 2010, the default version for PDF output is now 1.5, enabling more compression. This applies to all the TEX engines when used to produce PDF and to dvipdfmx. Loading the pdf14 LATEX package changes back to PDF 1.4, or set \pdfminorversion=4. pdf(LA)TEX now automatically converts a requested Encapsulated PostScript (EPS) file to PDF, via the epstopdf package, when and if the LATEX graphics.cfg configuration file is loaded, and PDF is being output."
You need to install Ghostscript software. This software help the pdf file see the graph. Please check the link
http://www.ghostscript.com/download/gsdnld.html
There are five different files depending on your operating system. For instance, if you are working in windows xp or 7, you will need to install the file for Windows (32 bit). If you are using windows 8 or 10, you will need the file for Windows (64 bit).
I used \usepackage{epstopdf} after \usepackage{graphicx} and moved all the graphics to a separate graphics folder. This has solved my issue. Of course one should modify the graphics lines as
Remove file extension (.eps) and add \usepackage{epstopdf} after \usepackage{graphicx} . It should be worked.
EPS is more than an image format: it's an entire programming language. The way that DVI mode includes EPS images is to simply leave a space for them in the output. If you look at a DVI, you'll find that the EPS images are not actually added to it: they have to be present for appropriate interpretation when looking at the DVI. When you convert the DVI to EPS format (or directly to PDF), it is the conversion tool that deals with the EPS, not TeX at all. (The usual DVI route uses GhostScript: it does contain all of the code to interpret EPS files.)
When producing a PDF directly, the images do have to be properly included by pdfTeX. It doesn't include an EPS interpreter (which would be much too complex to do), and instead expects that some other tool (probably GhostScript) is used first to make PDF files for inclusion. PDF files use some of the same concepts as EPS, but in a way that pdfTeX can use successfully.